CN102017783B - Network entity selection - Google Patents

Network entity selection Download PDF

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Publication number
CN102017783B
CN102017783B CN 200880128835 CN200880128835A CN102017783B CN 102017783 B CN102017783 B CN 102017783B CN 200880128835 CN200880128835 CN 200880128835 CN 200880128835 A CN200880128835 A CN 200880128835A CN 102017783 B CN102017783 B CN 102017783B
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network
preselected
network device
device
identity
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CN 200880128835
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Chinese (zh)
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CN102017783A (en )
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T·贝林
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诺基亚通信公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/1043MGC, MGCP or Megaco
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/104Signalling gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/80QoS aspects
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1285Details of finding and selecting a gateway for a particular call
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATIONS NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16Gateway arrangements

Abstract

本发明涉及网络实体选择。 The present invention relates to a network entity selection. 公开了网络实体选择的措施,例如包括供应由第一网络设备预选的网络实体的身份,并提供用于所述预选网络实体身份的验证信息,使得能够检验所述预选网络实体身份是否可适用于第二网络设备处的网络实体选择。 Discloses a measure of network entity selection, comprising, for example, supplied by a first identity of a network entity of the preselected network device, and providing verification information for said preselected network entity identity, enabling inspection of the preselected network entity identity is applicable for the second network device at the network entity selection.

Description

网络实体选择 Network entity selection

技术领域 FIELD

[0001] 本发明一般涉及通信系统中的网络实体选择。 [0001] The present invention generally relates to a network entity selection in a communication system. 特别地,本发明的实施例涉及通信系统的电路交换核心网络中的网络实体选择。 In particular, embodiments of the present invention relates to a communication system of a circuit-switched network in the core network entity selection. 通过本发明,可以选择任何种类的网络实体,例如媒体网关。 By the present invention, you can choose any type of network entity, such as media gateways.

背景技术 Background technique

[0002]当前,对目前和未来通信系统的标准化工作一般旨在实现更大的会聚性、灵活性和技术独立的实现。 [0002] Currently, the communication system of the present and future standardization work is generally aimed at achieving greater convergence, flexibility and technology independent implementations. 特别地,某些努力涉及通信系统中的承载独立核心网络。 In particular, some efforts have involved communication system core network bearer independent. 虽然本说明书示例性地参考核心网络(CN)的电路交换(CS)域,但以下内容还可以应用于核心网络的分组交换域乃至除核心网络本身之外的网络部分,例如公共陆地移动网络(PLMN)。 While the specification with reference to exemplary core network (CN) of a circuit switched (CS) domain, but may also be applied following the packet switched domain core network of the network part and the other outside the core network itself, such as a public land mobile network ( PLMN).

[0003] 尽管如此,图1示出电路交换核心网络的示例性逻辑网络架构,以下说明可以以其为基础且可以对其应用所述原理。 [0003] However, FIG. 1 illustrates an exemplary logical network architecture of a circuit-switched core network, the following description may be based and the principles thereof may be applied.

[0004] 与图1的细节无关,一方面,可以存在任何其它数目的某些元件,另一方面,还可以在其之间存在任意数目的中间元件(如例如其它图中所描绘的)。 [0004] regardless of the detail of Figure 1, on the one hand, there may be any other number of some of the elements, on the other hand, any number of intermediate elements (e.g. as depicted in other figures) may also be present therebetween. 虽然图1所使用的命名涉及3GPP (第三代合作伙伴计划)术语,但应注意的是此类术语(在下文中使用时同样)仅仅意图作为示例,并且还可以使用具有根据不同术语的不同命名的任何其它元件,只要基本原理、条件和/或前提相似即可。 Although FIG name used involves a 3GPP (Third Generation Partnership Project) terminology, it should be noted that such terms (as used hereinafter, the same) is intended as merely exemplary, and may also be used with different names depending on the terms of any other element, as long as the basic principle, conditions and / or the like can be provided. 这适用于例如举例说明的单独元件以及单独接口(参考点)。 This applies, for example, a separate element, and a separate interface (reference point) is exemplified. 特别地,当在下文中作为用于网络实体的非限制性示例对媒体网关进行参考时,任何其它网络实体(即,例如网络元件或网络元件的功能部分)同样可适用,例如附着于执行IP和/或端口转换但透明地传递媒体的会话边界控制器(SBC)的网关。 Particularly, when the media gateway in the following with reference to non-limiting example for a network entity, any other network entity (i.e., for example, functional portions of a network element or network element) is equally applicable, for example, attached to and performs IP / or port conversion but gateway transparently media session border controller (SBC) is.

[0005] 根据图1的示例性逻辑CS核心网络架构包括两个移动服务交换中心(MSC),其中的一个是网关移动服务交换中心(GMSC)。 [0005] According to an exemplary logical CS core network architecture of FIG. 1 comprises two mobile services switching centers (MSC), which is a gateway mobile services switching center (GMSC). 虽然还可以使用整体移动服务交换中心,但举例说明了具有分别由作为控制实体的MSC/GMSC服务器(G/MSC-S)和连接媒体网关(MGW)组成的分解架构(即软交换架构)的组合MSC节点。 Although also possible to use the entire mobile services switching center, but illustrated having respectively, by a control entity in the MSC / GMSC server (G / MSC-S) and connect the media gateway (MGW) consisting decomposition architecture (i.e. Softswitch) of a combination of MSC nodes. 作为示例,核心网络在操作上与GERAN(GSM EDGE无线电接入网络;GSM =全球移动通信系统;EDGE = GSM演进增强型数据速率)和UTRAN (通用陆地无线接入网)、以及PSTN (公共交换电话网)连接。 As an example, a core network operatively associated with GERAN (GSM EDGE Radio Access Network; GSM = Global System for Mobile; EDGE = GSM Enhanced Data rates Evolution) and UTRAN (Universal Terrestrial Radio Access Network), and PSTN (Public Switched telephone network) connection.

[0006] 作为诸如根据图1的CS核心网络的网络架构内的呼叫控制协议,已经提出了承载独立呼叫控制(BICC)和会话发起协议的某些修改,即具有封装的(encapsulated) ISDN(综合服务数字网)用户部分(SIP-1)的会话发起协议。 [0006] The call control protocol, such as the CS core network architecture of the network of FIG. 1, has been Bearer Independent Call Control (the BICC) and certain modifications made to a session initiation protocol, i.e. having encapsulated (encapsulated) ISDN (Integrated session services digital network) user part (SIP-1) initiation protocol. 虽然可以将BICC和SIP-1两者视为用于呼叫/会话控制的备选方案,但已提出了所谓的最优化和延迟媒体网关选择程序以用于基于BICC以及基于SIP-1的呼叫控制。 While both BICC and SIP-1 may be considered for call / session control alternative, it has been proposed a so-called delay and optimized media gateway selection based on program BICC call control based on the SIP-1 .

[0007] 在基于SIP-1的呼叫控制的情况下,当前所定义的最优化MGW选择包括一个节点(例如MSC/GMSC服务器)根据某些规则来选择媒体网关(MGW)并在SIP-1消息中将所选媒体网关的身份用信号通知给另一节点(例如,MSC/GMSC服务器)。 [0007] In the case of call control based on SIP-1 is currently defined optimized MGW selection comprises a node (e.g. MSC / GMSC server) to select a media gateway (MGW) in accordance with certain rules in the message and SIP-1 selected media gateway identity will be signaled to another node (e.g., MSC / GMSC server). 因此,使得接收到SIP-1消息的另一节点能够选择相同的媒体网关,如果其具有到所选媒体网关的Mc接口的话,因此节省媒体网关和传送网络资源。 Thus, such other node receives the SIP-1 message can select the same media gateway, if it has an interface to Mc selected media gateway, then the media gateway and thus saving transport network resources. 当前所定义的延迟MGW选择提供用于SIP-1消息的接收机选择其优选的媒体网关并将所选媒体网关的身份送回前一节点以便使得该节点能够选择相同的媒体网关的机会。 Identity delay MGW selection as currently defined SIP-1 provides for selecting which message receiver preferably selected media gateway and media gateway back to the previous node in order to cause the node to select the same media gateway opportunities. 另外,所述程序允许提供者(offerer)将“提出的”媒体网关身份发送到可以在后续节点获取(seizes)媒体网关时加以考虑的下一个SIP-1节点。 Be considered Further, the program allowing a provider (the offerer) transmits "presented" to the media gateway identity can be acquired in a subsequent node (seizes) media gateway node next SIP-1.

[0008] 由于所述最优化和延迟媒体网关选择程序当前被定义为可选程序,所以可以预见通信系统或网络将包括支持此类程序的节点和不支持此类程序的节点两者。 [0008] Because of the delay and optimized media gateway selection procedures currently defined as an optional procedure, the communication system or network can be expected to support such programs include both the nodes and the node does not support such a program. 这将在此类程序内的中间节点不能适当地处理各(信令)业务时导致兼容性问题。 This intermediate node within such a program can not properly handle each cause compatibility problems (signaling) traffic.

[0009] 此外,对于对所选媒体网关的身份进行编码以便在最优化和延迟媒体网关选择中从一个节点传输到另一节点,尚未定义特定的程序。 [0009] In addition, for the selected media gateway identity encoded for transmission from a node in the optimized media gateway selection and delay to another node, a specific program has not been defined. 这也可能导致兼容性问题。 This may also lead to compatibility issues.

[0010] 用于媒体网关身份编码的一种可想象方法在于会话描述协议(SDP)属性的使用,导致在SIP、更具体而言是SIP-1信令内传送SDP。 [0010] A method for encoding the identity of a media gateway conceivable method consists in Session Description Protocol (SDP) attributes used, resulting in the SIP, and more specifically signaling transmitted SIP-1 SDP.

[0011] 鉴于一般的两种媒体网关选择程序的上述可选性和SDP作为用于媒体网关身份的特定编码的使用,这意味着不是CS CN中的每个节点都可以理解对MGW身份进行编码的此类新SDP属性。 [0011] In view of the above-described general optional two selected media gateway as SDP programs and a particular coding of a media gateway identity, which means that each node in the CS CN is not to be understood that all of the MGW identity encoding such new SDP attribute. 根据当前SIP程序,中间节点将透明地转送任何未知SDP属性,例如对MGW身份进行编码的属性。 The current SIP procedure, the intermediate node transparently forwarding any unknown SDP attributes, for example, MGW identity encoding properties. 然而,假设源节点MSC A已选择MGW A且已在此类SDP MGW身份属性中指示其身份,并且不理解MGW身份SDP属性的中间(呼叫控制)节点B在IP信令中朝着后续节点转送未知属性并同时插入另一MGW B,那么所转送的MGW身份A可能误导例如MSC C的后续节点选择次最佳MGW Ao这将导致其中用户平面业务被从MGW A传送到MGff B并返回到MGW A的配置。 However, assuming that the source node has selected MGW MSC A and A has the identity indicated in such MGW SDP attribute identity, the identity and do not understand the intermediate MGW SDP attribute (call control) Node B IP forwarding node toward a subsequent signaling unknown property and simultaneously inserting another MGW B, then the identity of the transferred MGW e.g. a may mislead a subsequent node MSC C MGW selection suboptimal wherein Ao of which will lead the user plane traffic is transmitted from MGW a to MGW MGff B and returns to a configuration of.

[0012] 应注意的是只有当呼叫(即,用户平面业务)保持在由两个服务器(例如MSC A和MSC B)控制的MGW( S卩“逻辑MGW”)的两个分区(partit1n)之间的相同媒体网关内,处理由两个服务器控制的呼叫的媒体网关处的资源节省才是可能的。 [0012] It should be noted that only when the call (i.e., user plane traffic) in a MGW is controlled by two servers (e.g. MSC A and MSC B) (S Jie "logic MGW") of the two partitions (partit1n) of between the same media gateway, the media gateway resources controlled by the process at two call servers saving is possible. 如果另一方面,MSC服务器知道其不能实现此最优化,则其可以使用其它标准来使MGW选择最优化,例如到其中其判定路由要建立的连接或呼叫的下一跳的接近性(请注意,当涉及某种连接或呼叫时,还可以将下述网络地址表示为连接地址)。 If on the other hand, the MSC server knows that it can not achieve this optimization, it may use other criteria to make optimized MGW selection, for example, where it determines the next hop to the proximity of the connection or call routing to be established (note , when referring to a certain connection or call, the network address may also be expressed as the following connection address).

[0013] 上述缺点不利于其中执行某种媒体网关选择的目前和未来通信系统和网络的平稳操作。 [0013] wherein the above mentioned disadvantages not conducive to smooth operation of performing certain media gateway selection of current and future communications systems and networks.

[0014] 为了克服此类不利效果,必须注意的是目前的媒体网关选择程序被定义为可选的。 [0014] In order to overcome such adverse effect, it must be noted that the current media gateway selection procedure is defined as optional. 因此,命令任何节点以某种方式操作(在媒体网关选择中)的任何解决方案不符合其可选性质,因此是不适当的。 Therefore, any node in some way command operate any solutions (in a media gateway selection) is not consistent with its optional nature, and therefore inappropriate. 在此方面,例如对基于BICC的媒体网关选择采取的强制性措施不适用于基于SIP或SIP-1的媒体网关选择。 In this regard, such as mandatory measures BICC based media gateway choose to take or not apply to SIP-based media gateway selection of SIP-1. 这是因为对SIP或SIP-1应用类似程序将要求命令核心网络中的每个节点识别这个属性,这与程序的期望可选性冲突。 This is because the SIP or SIP-1-like application program command requires each node in the core network identified this property, it is desired that the alternative program conflicts. 特别地,可以部署充当SIP-ALG(应用级网关)的会话边界控制器(SBC),其出于IP(因特网协议)地址转换和防火墙的目的插入不转换代码(transcode)的用户平面实体。 In particular, it can be deployed to act as SIP-ALG (Application Level Gateway) Session Border Controller (the SBC), which for the purpose of IP (Internet Protocol) address translation and firewall is not inserted into user plane entity transcoding (in transcode) a. 同时,此类SBC可以透明地转送未知SDP属性。 Meanwhile, such SBC transparently transferred unknown SDP attributes.

[0015] 相对于上文,必须注意的是对于除媒体网关之外的网络实体的选择而言也存在相同或类似的缺点,例如附着于执行IP和/或端口转换但透明地传递媒体的会话边界控制器(SBC)的网关。 [0015] with respect to the above, it must be noted that the selection of a network entity other than the media gateway exist in terms of the same or similar drawbacks, such as adhering to perform session IP and / or port conversion but transparently transfer medium gateway border controller (SBC) is.

[0016] 因此,不存在对上述缺点的任何可行解决方案,特别是关于例如基于SIP-1的媒体网关选择。 [0016] Accordingly, there is no feasible solution to the above drawbacks, in particular, for example, based on the SIP-1 media gateway selection.

发明内容 SUMMARY

[0017] 实现本发明及其实施例是为了解决一个或多个上述缺点。 [0017] implement the present invention and its embodiments to address one or more of the above disadvantages.

[0018]因此,本发明及其实施例意图缓解网络实体选择中的缺点,例如由其可选性质导致的兼容性问题。 [0018] Accordingly, the present invention and its embodiments are intended to mitigate drawbacks in network entity selection, such as compatibility problems caused by its optional nature.

[0019] 根据本发明的示例性方面,公开了: [0019] According to an exemplary aspect of the invention, the disclosure:

[0020]-在权利要求1至8中的任一项中阐述的方法, [0020] - A method as set forth in any of claims 1 to claim 8,

[0021]-在权利要求9至19中的任一项中阐述的方法, [0021] - A method as set forth in claim any one of claims 9 to 19,

[0022]-在权利要求20至27中的任一项中阐述的设备,和/或 [0022] - set forth in any one of claims 20 to 27, wherein the apparatus, and / or

[0023]-在权利要求28至38中的任一项中阐述的设备。 [0023] - the device as claimed in any one of claims 28 to 38 set forth herein.

[0024] 根据本发明的一个示例性方面,提供了一种网络实体选择的方法,包括供应(furnishing)由第一网络设备预选的网络实体的身份,并提供用于所述预选网络实体身份的验证信息,使得能够检验所述预选网络实体身份是否可适用于第二网络设备处的网络实体选择。 [0024] According to an exemplary aspect of the present invention, there is provided a method of network entity selection, comprising a supply (Furnishing) a first identity of a network entity of the preselected network device, and provides for said preselected network entity identity authentication information, making it possible to verify the preselected network entity identity is applicable for network entity selection at a second network device.

[0025] 根据其进一步改进或修改,适用以下各项中的一个或多个: [0025] According to further improvements or modifications for one or more of the following:

[0026]-所述方法还包括在会话发起协议消息中将预选网络实体身份和验证数据发送到第二设备, [0026] - the method further comprises initiation protocol message in the preselected network entity identity and the verification data in a session to the second device,

[0027]-身份的供应包括在会话描述协议属性中对预选网络实体身份进行编码,并且验证信息的提供包括将所述预选网络实体的网络地址添加到所述会话描述协议属性,和/或 [0027] - the identity of the supply includes a session description protocol attribute identification code preselected network entity, and provides verification information comprises adding a network address of the preselected network entity to said session description protocol attribute, and / or

[0028]-所述方法还包括将预选网络实体的网络地址定义为会话描述协议连接数据,并在会话发起协议消息中将这样定义的网络地址作为会话描述协议连接数据发送。 [0028] - the method further comprises the network address of the preselected network entity is defined as session description protocol connection data, and a session initiation protocol message in the thus defined network address as session description protocol connection data transmission.

[0029] 根据本发明的一个示例性方面,提供了一种网络实体选择的方法,包括获得由第一设备预选的网络实体的身份和用于所述预选网络实体身份的验证信息,并基于该验证信息来检验所获得的网络实体身份是否可适用于网络实体选择。 [0029] According to an exemplary aspect of the present invention, there is provided a method of network entity selection, comprising obtaining authentication information from the network entity the identity of the first device for said preselected preselected network entity identity, based on the verify to verify the information obtained network entity identity is applicable for network entity selection.

[0030] 根据其进一步改进或修改,适用以下各项中的一个或多个: [0030] According to further improvements or modifications for one or more of the following:

[0031]-所述方法还包括在会话发起协议消息中接收预选网络实体身份和验证数据, [0031] - the method further comprises receiving a Session Initiation Protocol message preselected network entity identity and the verification data,

[0032]-所述会话发起协议消息包含会话描述协议属性中的预选网络实体的预选网络实体身份和网络地址、以及作为会话描述协议连接数据的预选网络实体的网络地址, [0032] - the preselected network entity identity and a network address of the Session Initiation Protocol message containing the preselected network entity in a session description protocol attribute, and a network address of the preselected network entity as session description data connection protocol,

[0033]-所述方法还包括从会话描述协议连接数据检索预选网络实体的网络地址,并且验证信息的获得包括从会话描述协议属性获得预选网络实体的网络地址, [0033] - the method further comprises connecting the network address of the preselected network entity to retrieve data from a session description protocol, and obtaining authentication information comprises obtaining the network address of the preselected network entity from the session description protocol attribute,

[0034]-所述检验包括将会话描述协议属性中的所获得的网络地址与会话描述协议连接数据的所检索的网络地址相互比较, [0034] - a network address will comprise said test description protocol attribute, then the obtained are compared with each network address with the session description protocol connection data retrieved,

[0035]-所述方法还包括如果该比较显示所比较的网络地址是相等的,则将所获得的网络实体身份用于网络实体选择,并且如果该比较显示网络地址不相等,则丢弃所获得的网络实体身份,和/或 [0035] - the method further comprises, if the comparison shows that the compared network addresses are equal, then the obtained network entity identity for network entity selection, if the comparison shows that the network addresses are not equal, then discards the obtained the network entity identity, and / or

[0036]-所述方法还包括从会话发起协议消息中去除会话描述协议属性。 [0036] - the method further comprises a session initiation protocol message is removed from the session description protocol attribute.

[0037] 根据上述方面中的任何一个,所述预选网络实体的网络地址可以包括用于经由所述网络实体的通信的因特网协议地址,和/或可以由移动服务交换中心设备来执行所述方法,和/可以在通信系统的电路交换核心网络中执行所述方法,和/或所述网络实体可以是媒体网关。 [0037] According to any of the above aspects, the network address of the preselected network entity may comprise an Internet protocol address of the method of communication with the network entity, and / or may be performed by the mobile services switching center apparatus via a , and / or may be performed in a circuit switched core network of a communication system, the method, and / or the network entity may be a media gateway.

[0038] 根据本发明的一个示例性方面,提供了一种设备,包括用于供应由第一网络设备预选的网络实体的身份的装置,用于提供用于所述预选网络实体身份的验证信息、使得能够检验所述预选网络实体身份是否可适用于第二网络设备处的网络实体选择的装置。 [0038] According to an exemplary aspect of the present invention, there is provided an apparatus, comprising means for supplying the identity of the network entity a first preselected network device for providing verification information for said preselected network entity identity , making it possible to verify whether the preselected network entity identity means selected network entity at a second network device may be applied to.

[0039] 根据其进一步改进或修改,适用以下各项中的一个或多个: [0039] According to further improvements or modifications for one or more of the following:

[0040]-所述设备还包括用于在会话发起协议消息中将预选网络实体身份和验证数据发送到第二设备的装置, [0040] - the device further comprises means for initiating a protocol message in the preselected network entity identity and the verification data in a session transmitting apparatus to the second device,

[0041]-所述供应装置包括用于在会话描述协议属性中对预选网络实体身份进行编码的装置,并且所述提供装置包括用于将预选网络实体的网络地址发送到所述会话描述协议属性的装置,和/或 [0041] - said supply means comprises means for encoding the preselected network entity identity in a session description protocol attribute, and the providing means comprises means for transmitting the network address of the preselected network entity to said session description protocol attribute apparatus, and / or

[0042]-所述设备还包括用于将预选网络实体的网络地址定义为会话描述协议连接数据的装置,所述发送装置还被配置为在会话发起协议消息中将这样定义的网络地址作为会话描述协议连接数据发送。 [0042] - the device further comprises a network address of the preselected network entity defined in a session description protocol connection data means, said transmitting means is further configured so that the network address defined in the Session Initiation Protocol message as a session description protocol connection data transmission.

[0043] 根据本发明的一个示例性方面,提供了一种设备,包括用于获得由第一设备预选的网络实体的身份和用于所述预选网络实体身份的验证信息的装置,和用于基于所述验证信息来检验所获得的网络实体身份是否可适用于网络实体选择的装置。 [0043] According to an exemplary aspect of the present invention, there is provided an apparatus, comprising means for obtaining authentication information from the network entity the identity of the first device for said preselected network entity identity preselected for, for means to check information based on the obtained network entity identity is applicable for network entity selection of the verification.

[0044] 根据其进一步改进或修改,适用以下各项中的一个或多个: [0044] According to further improvements or modifications for one or more of the following:

[0045]-所述设备还包括用于在会话发起协议消息中接收预选网络实体身份和验证数据的装置, [0045] - the device further comprises means for receiving a protocol message preselected network entity identity and the verification data in a session initiation,

[0046]-所述接收装置被配置接收会话发起协议消息,该会话发起协议消息包含会话描述协议属性中的预选网络实体的预选网络实体身份和网络地址、以及作为会话描述协议连接数据的预选网络实体的网络地址, [0046] - receiving means configured to receive the session initiation protocol message, the message comprising a session initiation protocol preselected network entity identity and a network address of the preselected network entity in a session description protocol attribute, as well as session description protocol connection data of the preselected network the network address of the entity,

[0047]-所述设备还包括用于从会话描述协议连接数据检索预选网络实体的网络地址的装置,并且所述获得装置包括用于从会话描述协议属性获得预选网络实体的网络地址的装置, [0047] - the device further comprises means for retrieving the network address of the preselected network entity of a data connection from the session description protocol, and the obtaining means comprises a means for a network address of the preselected network entity from the session description protocol attribute obtained,

[0048]-所述检验装置包括用于将会话描述协议属性中的所获得的网络地址与会话描述协议连接数据的所检索的网络地址相互比较的装置, [0048] - said test means comprises a network address of the session description protocol attribute and the obtained session description protocol comparing means connected to each network address of the retrieved data,

[0049]-所述设备还包括用于在所述比较装置显示所比较的网络地址相等的情况下将所获得的网络实体身份用于网络实体选择的装置,和用于在所述比较装置显示所比较的网络地址不相等的情况下丢弃所获得的网络实体身份的装置,和/或 [0049] - the device further comprises means for comparing a case where the display apparatus is equal to the compared network addresses obtained network entity identity for network entity selection means, and display means for the comparison means a network entity identity discarding the obtained network address where the compared under unequal, and / or

[0050]-所述设备还包括用于从会话发起协议消息中去除会话描述协议属性的装置。 [0050] - the device further comprises a session initiation protocol message from the means for removing the session description protocol attribute.

[0051] 根据上述方面中的任何一个,所述预选网络实体的网络地址可以包括用于经由所述网络实体的通信的因特网协议地址,和/或所述设备可以包括移动服务交换中心设备,和/可以所述设备可以位于通信系统的电路交换核心网络中,和/或所述网络实体可以是媒体网关。 [0051] According to any of the above aspects, the network address of the preselected network entity may comprise a communication via the Internet protocol address of the network entity, and / or the device may comprise a mobile services switching center apparatus, and / the device may be a communication system of the circuit switched core network, and / or the network entity may be a media gateway.

[0052] 根据本发明的一个示例性方面,提供了一种包括程序代码装置的计算机程序产品,所述程序代码装置被布置成当在设备的处理器上运行时执行根据上述方面中的任何一个的方法中的任何一个。 [0052] According to an exemplary aspect of the present invention, there is provided a computer program product comprising program code means, said program code means is arranged to perform, when run on a processor of a device according to any of the above-described time aspects any of the methods.

[0053] 根据本发明的一个示例性方面,提供了一种包括包含媒体网关的身份和媒体网关的网络地址的会话描述协议属性的数据结构。 [0053] According to an exemplary aspect of the present invention, there is provided a data structure of the session description protocol attribute containing a network address comprising a media gateway and media gateway identity.

[0054] 根据本发明的一个示例性方面,提供了一种包括会话发起协议消息的数据结构,该会话发起协议消息包含会话描述协议属性中的媒体网关的身份和媒体网关的网络地址、以及作为会话描述协议连接数据的媒体网关的网络地址。 [0054] According to an exemplary aspect of the present invention, there is provided a data structure comprising a session initiation protocol message, the message comprising a session initiation protocol media gateway identity and a network address of the media gateway in a session description protocol attribute, and a the network address of the media gateway session description protocol connection data.

[0055] 在各从属权利要求中阐述了根据本发明及其实施例的其它方面、实施例和修改。 [0055] According to the present invention is set forth and other aspects of embodiments, embodiments and modifications in the dependent claims.

[0056] 通过本发明的示例性实施例,要选择的网络实体可以例如是媒体网关。 [0056] Example embodiments of the present invention by way of example, to select, for example, the network entity may be a media gateway.

[0057] 通过本发明的示例性实施例,例如提供了检测在一个网络设备处预选的网络实体(例如媒体网关)身份或标识符与将在另一网络设备处的网络实体选择过程中使用的接收的网络实体身份或标识符之间的不符合性的至少一种方式,其中,所选网络实体身份或标识符被经由中间节点传递至另一网络设备。 [0057] By way of example embodiments of the present invention, for example, provide the detection of the preselected network entity in a network device (e.g. media gateway) identity or identifier used in the network entity selection at the network device further process at least one non-compliance manner between the network entity identity or identifier received, wherein the selected network entity identity or identifier is transmitted to another network device via an intermediate node. 此类检测可以例如包括所述一个网络设备提供用于指示此类不符合性的装置,并且所述另一网络设备能够通过这样提供的装置来识别所述不符合性。 Such detection means may comprise, for example, indicates that such non-compliance of the device provides for a network, and the other network device can be identified by such means provided the non-compliance.

[0058] 通过本发明的示例性实施例,例如提供了某些避免网络设备(例如移动服务交换中心)处的网络实体(例如媒体网关)选择被来自前一节点的网络实体(例如媒体网关)身份或标识符误导的措施、以及避免需要支持在通信系统或网络中的所有节点或网络设备中的网络实体(例如媒体网关)身份或标识符(即其选择和/或编码)的需要的措施。 [0058] By way of example embodiments of the present invention, there is provided, for example to avoid certain network devices (e.g., Mobile Services Switching Center) at the network entity (e.g. media gateway) is selected from the previous node network entity (e.g. media gateway) misleading measure identity or identifier, and avoid the need to support all the nodes in a network or network device in a communication system or network entity (e.g. media gateway) identity or identifier (i.e., its selection and / or encoded) is required to measure .

附图说明 BRIEF DESCRIPTION

[0059] 在下文中,将参照附图以非限制性示例的方式更详细地描述本发明,在附图中 [0059] In the following, by way of non-limiting example of the present invention will be described in more detail with reference to the accompanying drawings, in which

[0060] 图1示出其中可以应用本发明的示例性实施例的电路交换核心网络的逻辑网络架构, [0060] Figure 1 illustrates a network architecture wherein the logic circuit of the exemplary embodiment of the present invention may be applied switched core network,

[0061] 图2示出根据本发明的示例性实施例的第一方法的流程图, [0061] Figure 2 illustrates a flowchart of a method according to a first exemplary embodiment of the present invention,

[0062] 图3示出根据本发明的示例性实施例的第二方法的流程图, [0062] Figure 3 shows a flowchart of a method according to a second exemplary embodiment of the present invention,

[0063] 图4示出根据本发明的示例性实施例的第三方法的流程图, [0063] FIG. 4 shows a flowchart of a method according to a third exemplary embodiment of the present invention,

[0064] 图5示出根据本发明的示例性实施例的第四方法的流程图, [0064] FIG. 5 shows a flowchart of a method according to a fourth exemplary embodiment of the present invention,

[0065]图6示出根据本发明的示例性实施例的最优化媒体网关选择的信令图, [0065] FIG. 6 shows the optimized media gateway selection signaling diagram of an exemplary embodiment of the present invention,

[0066]图7示出根据本发明的示例性实施例的具有中间节点的最优化媒体网关选择的信令图, [0066] Figure 7 shows a signaling diagram optimized media gateway selection with an intermediate node according to an exemplary embodiment of the present invention,

[0067] 图8示出根据本发明的示例性实施例的延迟媒体网关选择的信令图, [0067] FIG. 8 illustrates a media gateway selection delay signaling diagram of an exemplary embodiment of the present invention,

[0068] 图9示出根据本发明的示例性实施例的具有中间节点的延迟媒体网关选择的信令图, [0068] FIG. 9 shows a signaling diagram of a media gateway selection delay with an intermediate node according to an exemplary embodiment of the present invention,

[0069] 图10示出根据本发明的示例性实施例的第一设备的示意性方框图, [0069] FIG. 10 shows a schematic block diagram of apparatus according to a first exemplary embodiment of the present invention,

[0070] 图11示出根据本发明的示例性实施例的第二设备的示意性方框图, [0070] FIG. 11 shows a schematic block diagram of apparatus according to a second exemplary embodiment of the present invention,

[0071] 图12示出根据本发明的示例性实施例的第一数据结构的示意性表示,以及 [0071] FIG. 12 shows a schematic data structure of the first exemplary embodiment of the present invention is represented, and

[0072] 图13示出根据本发明的示例性实施例的第二数据结构的示意性表示。 [0072] FIG. 13 shows a schematic representation of a data structure of a second exemplary embodiment of the present invention.

具体实施方式 detailed description

[0073] 在本文中参照特定非限制性示例来描述本发明。 [0073] The present invention will be described with reference to particular non-limiting examples herein. 本领域的技术人员应认识到本发明不限于那些示例,并且可以更广泛地进行应用。 Those skilled in the art will recognize that the present invention is not limited to those examples, and may be more broadly applied.

[0074] 特别地,主要相对于被用作用于网络配置的非限制性示例的可以根据3GPP规范来定义的电路交换(CS)核心网络(CN)来描述本发明及其实施例。 [0074] In particular, with respect to the main non-limiting example is used as a network configuration according to 3GPP specifications may be defined by a circuit switched (CS) core network (CN) to describe the present invention and its embodiments. 同样地,本文给出的实施例的描述具体而言指的是直接与之相关的术语。 Likewise, the description of the embodiments given herein specifically refers to terminology directly related thereto. 此外,主要相对于媒体网关选择来描述本发明及其实施例,虽然任何种类的网络实体或网络元件的选择同样可适用。 Further, with respect to the primary media gateway selection according to the present invention and its embodiment described embodiment, although any type of network selected entity or network element are equally applicable. 并且,出于会话信令目的使用SDP和SIP术语,同时还可以利用任何其它会话信令机制,只要符合所述特征即可。 And, for session signaling purposes SDP and SIP terminology, but also can use any other session signaling mechanism, as long as the feature to comply with. 此类术语仅在所提出的非限制性示例的背景下使用,并且当然不以任何方式限制本发明。 Such terminology is only used in the context of the presented non-limiting example, and of course do not limit the present invention in any way.

[0075] 对于示例性地作为以下示例性说明的根据的基本逻辑网络架构,对图1进行参考。 [0075] For the basic logical network architecture as an example according to the following exemplary description, reference is made to FIG.

[0076] 概括地说,本发明的实施例涉及可能将在网络实体(例如媒体网关)选择程序中使用的网络实体(例如媒体网关)身份的验证。 [0076] In summary, embodiments of the present invention may be directed to a network authentication entity (e.g. media gateway) network entity (e.g. media gateway) identity used in the selection procedure. 为此,本发明的实施例特别地包括被配置为用于在网络设备或节点之间以信号发送网络实体(例如媒体网关)身份的方法和设备及软件和数据结构的示例。 To this end, particular embodiments of the present invention is configured to include a signal transmission network between the network entity exemplary devices or nodes (e.g. media gateway) apparatus and method, and software and data structures for identity. 作为一个非限制性示例,可以将此类实施例配置为用于基于例如具有封装的ISDN用户部分(SIP-1)的会话发起协议的会话发起协议(SIP)的信令,其中,例如传送会话描述协议(SDP)数据。 As a non-limiting example, such embodiments may be configured for example, the Session Initiation Protocol-based signaling with encapsulated ISDN User Part (SIP-1) is a Session Initiation Protocol (SIP), wherein the delivery session e.g. description protocol (SDP) data. 此类信令例如可以在根据当前标准(例如通过3GPP、ETSI等)在例如公共陆地移动网络(PLMN)的电路交换核心网络中的以整体或组合方式(在后一种情况下在移动MSC服务器之间)实现的移动服务交换中心(MSC)之间出现。 Such signaling may be, for example, according to the current standard (e.g., by 3GPP, ETSI, etc.), for example, a public land mobile network (PLMN) is a circuit switched core network or combination entirety (in the latter case a mobile MSC Server between) occurs between the mobile services switching Center (MSC) implementation.

[0077] 在下文中,为了简化起见,术语“媒体网关”被用作用于任何种类的网络实体的非限制性示例,所述讲授内容不限于此。 [0077] Hereinafter, for simplicity, the term "Media Gateway" is used as a non-limiting example of any type of network entity, the teachings are not limited thereto.

[0078] 图2示出根据本发明的示例性实施例的方法的流程图。 [0078] Figure 2 illustrates a flowchart of a method according to an exemplary embodiment of the present invention.

[0079] 根据图2的方法,供应预选媒体网关(MGW)的身份(操作S201),并提供验证信息(操作S202)。 [0079] The method of Figure 2, the identity of a media gateway (MGW) preselected supplied (operation S201), and provides authentication information (operation S202). 使这样提供的验证信息与所选MGW身份相关联并使得接收到MGW身份和验证信息的网络设备能够检验这样接收到的媒体网关身份是否可适用于该设备处的MGW选择。 So that verification information associated with the selected MGW identity and thus provided a network device such that the received MGW identity and the verification information to be able to verify this received media gateway identity is applicable for MGW selection at the device. 因此,可以避免接收网络设备在媒体网关选择中由于预选媒体网关(在发送网络设备处选择)的身份在从发送网络设备到接收网络设备的传输期间被以某种方式改变或变得不明确而被误导。 Thus, the receiving network device can be avoided since the preselected media gateway identity (network selection at the transmitting device) is changed or becomes a media gateway selection during network from a transmitting device to a receiving network device and is not clear in some manner was misled.

[0080] 因此,可以优选地在媒体网关选择程序的发起侧、例如在第一网络设备(例如MSC)处或在MGW选择中的任何中间网络设备(例如MSC)的发送侧处执行图2的方法。 [0080] Thus, the media gateway may preferably be selected in the originating side procedure, for example, in FIG. 2 performed at the transmitting side of the first network device (e.g. MSC) or at any intermediate network apparatus (e.g. MSC) in MGW selection of method.

[0081] 也就是说,图2的方法描述了如何向远程网络设备(例如MSC)指示(例如经由中间节点)透明地通过网络的MGW身份不可适用于远程网络设备处的媒体网关选择的方式。 [0081] That is, the method of Figure 2 to describe how a remote network device (e.g. MSC) an indication (e.g., via an intermediate node) transparently through the network MGW identity is not applicable to the embodiment of the media gateway selection at a remote network device.

[0082] 图3示出根据本发明的示例性实施例的方法的流程图。 [0082] Figure 3 illustrates a flowchart of a method according to an exemplary embodiment of the present invention. 对于这样描绘的方法,示例性地假设在SIP或SIP-1消息内的SDP属性中传送MGW身份。 For such a method depicted exemplarily assume SDP attributes in the SIP message or SIP-1 MGW identity is transmitted.

[0083] 根据图3的方法,通过在SDP属性中对预选MGW身份进行编码来供应预选媒体网关(MGW)的身份(操作S301),并通过将预选媒体网关的网络地址、即被选用于要建立的相应连接或呼叫的网络地址,也添加到SDP属性来提供验证信息(请注意,当涉及某种连接或呼叫时,还可以将下述网络地址表示为连接地址)。 [0083] The method of Figure 3, to supply the identity of a media gateway (MGW) preselected (operation S301) by encoding the preselected MGW identity in the SDP attribute, and a network address of the preselected by the media gateway, i.e. be selected for corresponding connection or call to establish a network address is also added to the SDP attribute provides authentication information (Please note, when referring to a certain connection or call, the network address may also be expressed as the following connection address). 虽然不限于此,网络地址(连接地址)可以是用来传送用户平面业务的预选媒体网关的IP(任何可想象版本的因特网协议,例如IPv4或IPv6)地址。 Although not limited thereto, the network address (connection address) may be used to transmit IP preselected media gateway user plane traffic (any imaginable internet protocol version, e.g. IPv4 or IPv6) address. 此外,可以将预选媒体网关的预选MGW身份和网络(IP)地址结合在同一SDP属性/扩展或彼此相关联的不同SDP属性/扩展中。 Moreover, the preselected preselected media gateway MGW identity and network (IP) address may be combined in the same SDP attribute / extension properties or different from each other associated SDP / extension. 此类属性可以例如是会话级属性或媒体级属性。 Such properties may, for example, session-level attribute or media-level attribute. 网络地址可以是例如在根据RFC 4566的SDP c线中传输的“连接地址”。 The network address may be, for example, in a transmission line in accordance with RFC SDP c 4566 in "connection address." 或者,作为替代或除SDP属性之外,还可以使用用于这些元素的传送的任何其它可想象参数或消息字段。 Alternatively, instead of or in addition to the SDP attributes may be used for any other conceivable parameters or message field conveys these elements. 在操作S303中,预选媒体网关的网络地址(例如IP地址)被定义为SDP连接数据。 In operation S303, the preselected media gateway network address (e.g. IP address) is defined as SDP connection data. 即,根据当前SDP程序,用于要建立的相应连接或呼叫的网络地址(例如IP地址)被包括在各参数中。 That is, according to current SDP program for the corresponding connection or call to be established a network address (e.g. IP address) is included in each of the parameters. 出于本说明的目的,虽然非限制性地,但假设此参数是根据SDP规范的“c线”。 For purposes of this description, although not limited, but it is assumed that this parameter is a "c line" SDP specification. 包括在SDP “c线”中的网络地址(操作S303)当然与添加到上述SDP属性(操作S302)的网络地址相同。 SDP includes a network address in the "C line" (operation S303) and the same of course added to the above SDP attribute (operation S302) a network address. 随后,在操作S304中发送SIP(更具体而言是SIP-Ι)消息,其至少包含作为SDP属性的所选MGW身份和验证信息(即,例如IP地址),并且优选地还包含作为SDP “c线”的定义网络(IP)地址。 Subsequently, in operation S304 transmits SIP (more specifically, the SIP-Ι) message, which comprises at least SDP attribute as the selected MGW identity and the verification information (i.e., e.g. IP address), and preferably further comprises a SDP " c-line "is defined as a network (IP) address. 所述消息可以将此属性包含在SDP提供或SDP应答中。 The message may contain this attribute in the offer or SDP answer SDP. 因此,图3的方法可以例如在媒体网关选择程序的发起侧处、例如在执行MGW选择的第一网络设备(例如MSC)处执行,或者在MGW选择中的任何中间网络设备(例如MSC)的发送侧处执行。 Accordingly, the method of FIG. 3 may be for example, selecting a media gateway at the originating side procedure, for example, performed at a first network device (e.g. MSC) in MGW selection performed at an intermediate network device or any MGW selection (e.g., MSC) of performed at the sending side.

[0084] 图4示出根据本发明的示例性实施例的方法的流程图。 [0084] Figure 4 illustrates a flowchart of a method according to an exemplary embodiment of the present invention.

[0085] 根据图4的方法,在操作S401中获得预选或推荐媒体网关(MGW)的身份和与此MGW身份相关联的验证信息。 [0085] The method of Figure 4, to obtain the identity of the preselected or recommended media gateway (MGW) and verification information with this MGW identity associated in operation S401. 在操作S402中,检验预选网络实体身份是否可适用于执行本发明的设备、即第二网络设备处的网络实体选择。 In operation S402, it is checked whether the preselected network entity identity is applicable to the implementation of the device according to the invention, i.e. the network entity selection at a second network device. 因此,可以避免接收第二网络设备由于意图使用的预选媒体网关的身份在从发送网络设备到接收第二网络设备的传输期间被以某种方式改变或变得不明确而在媒体网关选择过程中被误导。 Thus, the second network device receiving avoided since the identity of the intended use of the preselected media gateway is changed or becomes clear and the media gateway selection process in some way during the network from a transmitting device to a receiving device of the second network was misled. 因此,例如可以在媒体网关选择程序的终止侧、例如在执行MGW选择过程的第二网络设备处或在执行MGW选择过程的任何中间网络设备(例如MSC)的接收侧处执行图4的方法。 Thus, for example, in terminating side media gateway selection procedure, for example, a method may be 4 in the second network device performs MGW selection process or at the reception side executes any intermediate network apparatus (e.g. MSC) performing a MGW selection process.

[0086] 图5示出根据本发明的示例性实施例的方法的流程图。 [0086] Figure 5 illustrates a flowchart of a method according to an exemplary embodiment of the present invention. 对于这样描绘的方法,示例性地假设在SIP或SIP-1消息内的SDP属性中传送MGW身份。 For such a method depicted exemplarily assume SDP attributes in the SIP message or SIP-1 MGW identity is transmitted.

[0087] 根据图5的方法,在SIP或SIP-1消息中接收预选或推荐媒体网关(MGW)的身份和与该预选MGW身份相关联的验证信息(操作S501),然后由此、即从其SDP属性获得所述身份和验证信息(操作S502)。 [0087] The method of Figure 5, receiving the preselected or recommended media gateway (MGW) in a SIP or SIP-1 message authentication and identity information associated with the pre-selected MGW identity (operation S501), and thus, from SDP attribute which the identification and authentication information is obtained (operation S502). 所述消息可以将此属性包含在SDP提供或SDP应答中。 The message may contain this attribute in the offer or SDP answer SDP. 根据对应于根据图3的方法的非限制性示例的非限制性示例,接收到的消息包含SDP属性中的预选媒体网关的预选媒体网关身份和网络地址、以及作为SDP连接数据的预选媒体网关的网络地址,其中,所述网络地址可以优选地是IP地址。 The corresponding non-limiting examples of non-limiting example method of FIG. 3, the received message containing the preselected media gateway identity and a network address in the SDP attribute preselected media gateway and media gateway as SDP connection preselected data network address, wherein the network address may be an IP address preferably. 如果是这样,在这里假设如此,则操作502获得预选媒体网关的网络(例如IP)地址作为验证数据。 If so, where such a hypothesis, the operation to obtain the preselected media gateway network 502 (e.g., IP) address as the verification data. 在这样接收到的SIP或SIP-1消息中,根据当前SDP规范,SDP连接数据被包括在例如SDP “c线”中,其中,可以由发送网络设备与接收网络设备之间的通道上的中间节点来改变“c线”中的此连接数据。 In such a received SIP message or SIP-1, according to current SDP specification, SDP connection data is included in the SDP, for example, "C line", where the intermediate can be made on the transmission path between the network device and a receiving network device to change the data connection node "c line" in the. 还从连接数据、即“c线”中检索此连接数据,例如即预选媒体网关的网络地址(操作S503)。 Also, i.e., "c-line" in this connection to retrieve data from the data connection, i.e. for example the network address of the preselected media gateway (operation S503). 然后,为了检验接收到的MGW身份,在操作S504中,将SDP “c线”中的网络(IP)地址与上述SDP属性中的网络地址相比较。 Then, in order to validate the received MGW identity, in operation S504, the SDP "C line" in the network (IP) address and the network address in SDP attribute is compared. 如果操作S504的比较显示网络地址是相等的,即接收到的MGW身份可适用于MGW选择,则将接收到的MGW身份用于MGW选择(操作S505)。 If the comparison operation S504, that the network addresses are equal, i.e. the received MGW identity is applicable to MGW selection, the received MGW identity will be used for MGW selection (operation S505). 否贝1J,如果操作S504的比较显示网络地址是不相等的,即接收到的MGW身份不可适用于MGW选择,则将接收到的MGW身份丢弃而不用于MGW选择(操作S506)。 No shell 1J, if the comparison operation S504, that the network addresses are not equal, i.e. the received MGW identity is not suitable for MGW selection, the received MGW identity to be discarded and not for MGW selection (operation S506). 在任何情况下,可以从SIP或SIP消息中去除接收到的包含由发送网络设备添加的预选MGW身份和预选MGW身份的IP地址的SDP属性(操作S507)。 In any case, can be removed in the received SDP attribute contains the preselected preselected MGW MGW identity and the identity of the IP address added by the network device from transmitting SIP or SIP message (operation S507). 可选地,可以将图5中未示出的经这样修改的SIP或SIP-1消息转送到另一节点或网络设备。 Alternatively, FIG. 5 (not shown) through this modified SIP or SIP-1 message is forwarded to another node or network device. 因此,可以在执行媒体网关选择程序的设备的终止侧处、或在任何中间网络设备(例如MSC)的接收侧处执行图5的方法。 Thus, the method performed in the device 5 may be a media gateway selection procedures at the terminating side, or at the reception side executes any intermediate network apparatus (e.g. MSC) is.

[0088] 对于关于图2至5的上述方法的更多细节,对图6至9的示例性流程图进行参考。 [0088] For more details on the above-described method of FIGS. 2-5, the exemplary flowchart of Figures 6 to 9 will be reference.

[0089]图6示出根据本发明的示例性实施例的最优化媒体网关选择的信令图。 [0089] FIG. 6 shows the optimized media gateway selection signaling diagram of an exemplary embodiment of the present invention.

[0090] 根据图6,第一设备MSC A从媒体网关MGW A请求新终结点(terminat1n)的预留。 [0090] According to FIG. 6, a first device requesting a reservation MSC A new endpoint (terminat1n) from a media gateway MGW A. MGW A确认该终结点的预留并指示其向该终结点分配了网络(IP)地址IPA(步骤I)。 MGW A confirms the reservation of the endpoint and indicates that it allocated to that network termination (IP) address IPA (step I). 应注意的是MGW可以包含具有单独IP地址的多个接口。 It should be noted that MGW may comprise a plurality of interfaces having a separate IP address. MSC A因此预选媒体网关MGW A,其中,网络地址IPA用于经由预选媒体网关进行的相应呼叫建立。 Thus MSC A preselected media gateway MGW A, wherein, for a respective network address IPA call established via a media gateway preselected. 在步骤2中,MSC A生成SIP或SIP-1消息,在这种情况下为SIP邀请(SIP INVITE),并将其发送到后续节点B。 In step 2, MSC A generates a SIP or SIP-1 message, in this case a SIP INVITE (the INVITE SIP), and sends it to the subsequent node B. 作为非限制性示例,这样发送的消息包括封装的SDP,其包括叙述由GMW A根据正常SIP/SDP规则分配的网络地址IPA的SDP “c线”(“c =”)和叙述唯一预选(因此推荐)的MGW身份MGffIDA和对应于预选媒体网关的添加网络地址IPA两者的称为“mgwid”的SDP属性(“a=”)作为验证数据。 By way of non-limiting example, the message thus transmitted includes a package of the SDP, which includes a description of a dispensing GMW A according to a normal SIP / SDP rules of the network address IPA SDP "c line" ( "c =") and describes a unique preselected (and therefore recommended) MGffIDA the MGW identity and network address of both the IPA was added corresponding to the preselected media gateway called "mgwid" the SDP attribute ( "a =") as the verification data. 当接收到此消息时,特别地,MSC B基于“c线”内容、S卩IPA来确定用于媒体(即用户平面业务)的目的地。 Upon receiving this message, in particular, MSC B based "c Channel", S Jie IPA for determining a destination media (i.e., user plane traffic). 并且,发现“c线”的内容、S卩IPA等于SDP属性中的验证数据的内容,即IPA。 And we found that the content "c line", S Jie IPA SDP attribute equal to the content of the verification data, i.e. IPA. 因此,发现应将SDP “mgwid”属性中的接收到的媒体网关身份MGWIDA用于媒体网关选择过程。 Therefore, the discovery received media gateway identity should SDP "mgwid" attribute MGWIDA for media gateway selection process. 还确定其具有朝向MGW A的控制接口并判定在此媒体网关处请求资源的预留。 Further determines that it has a control interface towards MGW A and determines the resource reservation request in this media gateway. 其指示MGW为朝向IP地址IPA发送媒体的终结点预留资源并为另一终结点预留资源(步骤3)。 Which indicates MGW to reserve resources for transmission toward the endpoint media IP address IPA and to reserve resources (step 3) to the other endpoint. 媒体网关MGW A确定用于第一终结点的IP地址IPA是自己的IP地址并且配置某些内部捷径将该终结点与在步骤I中预留的终结点相连,从而节省外部传送资源和内部处理资源。 IPA the IP address of a media gateway MGW A to determine a first endpoint is configured own IP address and some internal shortcut to the connected endpoint in step I reserved endpoint, thereby saving external transport resources and internal processing resources. 在步骤4中,MGW A确认资源的预留并指示其向第二终结点分配网络(IP)地址IPA2。 In step 4, MGW A confirms the reservation of the resources and indicates that it allocated network (IP) address IPA2 to the second endpoint. 出于继续呼叫建立的目的,节点B本身可以生成用于转送的相应SIP或SIP-1消息,在这种情况下为SIP邀请(SIP INVITE)(步骤5)。 For the purpose of continuing the call setup, the Node B itself may generate corresponding forwarding SIP messages or SIP-1, in this case the SIP Invite (SIP the INVITE) (Step 5). 在此消息中,在SDP “c线”中插入网络地址IPA2。 In this message, the network address IPA2 inserted in SDP "c line" in the. 该消息还可以如前所述包括SDP属性“mgwid”。 The message may also include a SDP attribute previously described "mgwid".

[0091] 因此,根据图6的操作,MSC A被配置为在发送侧处执行图2和3方法中的任何一个,而节点B被配置为在接收侧处执行图4和5的方法中的任何一个以及在发送侧处执行图2和3的方法中的任何一个。 [0091] Thus, according to the operation of FIG. 6, MSC A is configured to be any one of 2 and 3, a method for transmitting side performs the drawing, the node B is configured in the process at the receiving side executes 4 and 5 in and any of a method of performing any of a transmission side 2 and FIG. 3.

[0092]图7示出根据本发明的示例性实施例的具有中间节点的最优化媒体网关选择的信令图。 [0092] Figure 7 shows a signaling diagram optimized media gateway selection with an intermediate node according to an exemplary embodiment of the present invention. 假设中间节点B不支持具有根据SDP编码的MGW身份的基于SIP或SIP-1的MGW选择。 It assumed that the intermediate node B does not support SIP or SIP-1 MGW MGW identity according to the selected coding having SDP.

[0093] 图7的步骤I和2等效于图6的那些。 Those steps [0093] FIG. 7 is equivalent to the I and 2 of FIG. 与图6的节点B相反,图7的节点B不具有与媒体网关MGW A的接口,但是具有使用网络地址IPB的媒体网关MGW B。 In contrast to FIG. 6, the node B, the node B of FIG. 7 does not have an interface with media gateway MGW A, but with the use of a network address IPB media gateway MGW B. 例如作为SBC或SIP-ALG的节点B不支持最优化MGW选择和相关“mgwid”属性,从MSC A接收SIP邀请(SIP INVITE)消息并忽视“mgwid”属性。 For example as a SBC or SIP-ALG Node B does not support optimized MGW selection and the related "mgwid" attribute, receives the SIP INVITE (the INVITE SIP) message from MSC A and ignore "mgwid" attribute. 其插入自己的MGW B,该MGW B可以在与节点B相同的物理实体中或在分离的单独物理实体中。 Its own insertion MGW B, B which the MGW may be isolated or separate physical entity in the Node B in the same physical entity. 可以例如为了IP版本转换或作为媒体平面防火墙而插入MGW B且其可以在没有代码转换的情况下传递媒体。 For example, can be IP version conversion or as a media plane firewall and which is inserted into the MGW B may pass media without transcoding situation. 节点B指示MGW B为朝向IP地址IPA发送媒体的终结点预留资源并为另一终结点预留资源(步骤3)。 Node B indicates the MGW B to reserve resources for transmission toward the endpoint media IP address IPA and to reserve resources (step 3) to the other endpoint. MGW B确认资源的预留并指示其向第二终结点分配了IP地址IPB (步骤4)。 MGW B confirms the reservation of the resources and indicates that the second endpoint IP address is assigned the IPB (step 4). 根据SDP程序,节点B在SDP “c线”中插入此网络地址IPB (由于愿意经由其相关媒体网关MGW B建立呼叫或连接),但透明地传递(即不改变)被视为在节点B处未知的SDP属性(步骤5)。 The SDP procedures, Node B is inserted in this network address IPB SDP "line C" (due willing to establish a call or connection via the MGW its associated media gateway B), but it transparently (i.e., without change) at node B is considered unknown SDP attributes (step 5). 后续节点MSCC具有与媒体网关MGW C的接口。 MSCC subsequent node having an interface with the media gateway MGW C. 当接收到由中间节点B发送的消息时,特别地,MSC C确定“c线”的内容、即IPB不等于SDP属性中的验证数据的内容,S卩IPA。 Upon receiving the message transmitted by the intermediate Node B, in particular, MSC C determines the content "c line", i.e., IPB content SDP attribute is not equal to the verification data, S Jie IPA. 因此,可以发现不应将接收到的媒体网关身份MGWIDA用于MGW选择。 Thus, it was found not to be received media gateway identity MGWIDA for MGW selection. 相反,MSC C识别到最优化MGW选择不可适用,从接收到的消息中去除SDP属性。 Instead, MSC C identified optimized MGW selection is not applicable, removed from the SDP attribute of the received message. 此外,MSC C选择媒体网关MGW C,该选择可以例如确定相对于MSC C路由呼叫的下一跳的最优化位置上的MGW。 In addition, MSC C selected media gateway MGW C, the selection may be determined, for example, with respect to the optimized MGW next hop location MSC C routes the call. MSC C指示MGW C为朝向IP地址IPB发送媒体的终结点预留资源并为另一终结点预留资源,并且MGW C确认资源的预留并指示其向第二终结点分配了IP地址IPC(步骤6和7)。 MSC C indicates MGW C to reserve resources for an IP address IPB toward the endpoint media transmission and reserve resources for another termination point, and MGW C confirms the reservation of the resources and indicates that the second endpoint IP address is assigned the IPC ( step 6 and 7). 然后,其将其到其相关媒体网关MGW C的网络地址插入到SDP “c线”中、即IPC,并转送此生成的SIP或SIP-1消息(步骤8)。 Then, to the network address to which its associated media gateway MGW C is inserted into the SDP "c-line", i.e. the IPC, this generates and forwards a SIP or SIP-1 message (step 8). 该消息还可以如前所述包括SDP属性“mgwid”。 The message may also include a SDP attribute previously described "mgwid".

[0094] 因此,根据图7的操作,MSC A被配置为在发送侧执行图2和3的方法中的任何一个,节点B被配置为不执行本文所述的方法中的任何一个,并且MSC C被配置为在接收侧处执行图4和5的方法中的任何一个以及在发送侧处执行图2和3的方法中的任何一个。 Any [0094] Thus, according to the operation of FIG. 7, MSC A is configured to perform the transmission side in FIG. 2 and 3, the method, the Node B is configured to not perform any of the method described herein in, and the MSC C is configured as any one of the method performed at the receiving side in FIGS. 4 and 5 and any one of the method performed at the transmission side in FIG. 2 and 3 in.

[0095] 图8示出根据本发明的示例性实施例的延迟媒体网关选择的信令图。 [0095] FIG. 8 shows a signaling diagram according to an exemplary embodiment of the delay medium of the present invention, the gateway selection.

[0096] 根据图8,第一设备MSC-A判定应用延迟MGW选择程序且在此阶段不选择或预选MGW。 [0096] According to FIG. 8, a first apparatus MSC-A determines that the application program and do not delay MGW selection or pre-selected MGW at this stage. MSC A向后续节点B指示MSC A将不选择或预选媒体网关。 MSC A to MSC A indicating a subsequent node B will not be selected or preselected media gateway. 这通过向后续节点、例如MSC B发送SIP邀请(SIP INVITE)请求来实现。 This is achieved by the subsequent node, e.g. MSC B sends a SIP Invite (the INVITE SIP) request. SIP邀请(SIP INVITE)请求包含封装的SDP,该封装的SDP包含具有未指定IP地址(0.0.0.0)的“c线”。 SIP invite (the INVITE SIP) request containing SDP package, the package comprises a SDP unspecified IP address (0.0.0.0) of the "c-line." MSC A还可以判定推荐媒体网关并使用新SDP属性“mgwid”来指示所推荐的MGWB的身份。 MSC A judgment may also recommend the use of new media gateways and SDP attribute "mgwid" to indicate the identity of the recommended MGWB. 根据本实施例,此SDP属性的值包含与在“c线”中相同的未指定IP地址,另外包含MGW B的唯一标识MGWID B(步骤I)。 Unique identification MGWID B (step I) of the present embodiment, the value of this SDP attribute contains the "c-line" in the same IP address is not specified, further comprising MGW B based. 在从MSC A接收到SIP邀请(SIP INVITE)消息时,MSC B将SDP “mgwid”属性中的IP地址与相应SDP “c线”中的IP地址相比较。 Upon receiving the SIP Invite from MSC A (the INVITE SIP) message, MSC B the SDP "mgwid" IP Address The IP address of the corresponding attribute in SDP "c line" in comparison. 由于两个IP地址是相等的,所以MSC B将SDP “mgwid”属性中MGW身份MGWIDB用于媒体网关的选择。 Because the two IP addresses are equal, the MSC B to SDP "mgwid" attribute for selecting a MGW identity MGWIDB media gateway. 其确定其具有朝向MGW B的控制接口并判定在此MGW处请求资源的预留。 Which determines that it has a control interface towards MGW B and decides to request reservation of resources at this MGW. MSC B指示MGW B为两个互连终结点预留资源。 MSC B indicates MGW B to reserve resources for interconnecting two endpoints. MGW B确认资源的预留并指示其向终结点分配了IP地址IPBl和IPB2 (步骤2)。 MGW B confirms the reservation of the resources and indicates that it allocated IP address and IPBl IPB2 (Step 2) to the endpoint. 根据图8,网络地址IPBl用于继续步骤3和4中的会话发起过程。 According to FIG. 8, the network address IPBl used in steps 3 and 4 continue the session initiation procedure. 在步骤5中,MSC B将MGW B配置为使用网络地址IPC来发送媒体。 In step 5, MSC B to MGW B using media configured to transmit the network address IPC. 应注意的是可以用其它信令例如ISUP(ISDN用户部分)信令或朝向移动终端的信令来代替步骤3至5,。 It is noted that other signaling may be for example ISUP (ISDN user part) signaling or instead of steps 3 to 5 of signaling the mobile terminal toward ,.

[0097] 在步骤6中,节点B生成SIP或SIP-1消息,在这种情况下为SIP 183会话过程,并将其发送到MSC A0作为非限制性示例,这样发送的消息包含SDP数据部分,该SDP数据部分包括叙述由MGW B根据正常SIP/SDP规则分配的网络地址IPB2的SDP “c线”(“c =”)和叙述预选或推荐MGW身份MGWIDB和对应于预选或推荐媒体网关的添加网络地址IPB2两者的SDP属性(a = mgwid)作为验证数据。 [0097] In step 6, the node B generates a SIP or SIP-1 message, in this case a SIP 183 session, and sends it to the MSC A0 non-limiting example, this message contains SDP data transmission section the SDP data portion comprises recited assigned by MGW B according to normal SIP / SDP rules network address IPB2 the SDP "c line" ( "c =") and described primary or recommended MGW identity MGWIDB corresponding to the preselected or recommended media gateway Add SDP attributes of both a network address IPB2 (a = mgwid) as the verification data. 根据本实施例,此新SDP属性“mgwid”的值包含与在“c线”中相同的IP地址IPB2,另外包含媒体网关B的唯一标识MGWIDB。 According to this embodiment uniquely identifies MGWIDB embodiment, "mgwid" The value of this new SDP attribute contains the "c-line" in the same IP address IPB2, further comprising a media gateway B. 当接收到此消息时,特别地,MSC A基于“c线”内容、即IPB2来确定“c线”的内容、即IPB2等于SDP属性中的验证数据的内容,即IPB2。 Upon receiving this message, in particular, MSC A content-based "c-line", i.e. to determine the content IPB2 "c line", i.e. IPB2 SDP attribute equal to the content of the verification data, i.e. IPB2. 因此,将接收到的媒体网关身份MGWIDB用于MGW选择。 Therefore, the received media gateway identity MGWIDB for MGW selection. 其确定其具有朝向MGW B的控制接口并判定在此媒体网关处请求资源的预留。 Which determines that it has a control interface towards MGW B and decides to request the reservation of resources at this media gateway. 其指示MGWB为朝向IP地址IPB2发送媒体的终结点预留资源(步骤7)。 MGWB indication towards which the IP address of the endpoint sending the media IPB2 reserved resources (step 7). MGW B确定IP地址IPB2是自己的IP地址并将某个内部捷径配置为将该终结点与在步骤2中预留的终结点相连,从而节省外部传送资源和内部处理资源。 MGW B IPB2 determine the IP address is its own IP address and an internal configuration of the shortcut to the connected endpoint endpoint reserved in Step 2, thereby saving external transport resources and internal processing resources.

[0098] 因此,根据图8的操作,MSC A和MSC B两者被配置为在发送侧处执行图2和3的方法中的任何一个以及在接收侧处执行图4和5的方法中的任何一个。 [0098] Thus, according to the operation of FIG. 8, both MSC A and MSC B is configured to perform any method and a receiving side performed at 4 and 5 is performed at the transmission side in the process of FIGS. 2 and 3, in anyone.

[0099] 图9示出根据本发明的示例性实施例的具有中间节点的延迟媒体网关选择的信令图。 [0099] FIG. 9 shows a signaling diagram of a media gateway selection delay with an intermediate node according to an exemplary embodiment of the present invention. 假设中间节点B不支持具有根据SDP编码的MGW身份的基于SIP或SIP-1的MGW选择。 It assumed that the intermediate node B does not support SIP or SIP-1 MGW MGW identity according to the selected coding having SDP.

[0100] 图9的步骤I等效于图8的步骤。 Step [0100] FIG. 9 is equivalent to step I of Fig. 然后,例如SBC或SIP-ALG的不支持最优化MGW选择和相关“mgwid”属性的某个节点B接收SIP邀请(SIP INVITE)消息并忽视“mgwid”属性。 Then, for example, SBC or SIP-ALG does not support optimized MGW selection and related a node B "mgwid" property received SIP invite (SIP INVITE) message and ignore "mgwid" attribute. 其插入自己的媒体网关MGW B,该媒体网关MGW B可以在与节点B相同的物理实体中或在分离的单独物理实体中。 Insert their media gateway MGW B, B which the MGW Media Gateway can be isolated or separate physical entity in the Node B in the same physical entity. 可以例如为了IP版本转换或作为媒体平面防火墙而插入MGW B且其可以在没有代码转换的情况下传递媒体。 For example, can be IP version conversion or as a media plane firewall and which is inserted into the MGW B may pass media without transcoding situation. 节点B指示MGW B为两个终结点预留资源,并且MGW B确认资源的预留并指示其向该终结点分配了IP地址IPBl和IPB2 (步骤2)。 Node B indicates the MGW B to reserve resources for the two endpoints, and the MGW B confirms the reservation of the resources and indicates that it allocated to that endpoint and the IP address IPBl IPB2 (Step 2). 在步骤3中,节点B将SIP邀请(SIP INVITE)消息转送到另一网络设备MSC C。 In step 3, the SIP Invite Node B (the INVITE SIP) message to the other network device MSC C. SIP邀请(SIPINVITE)包含具有IP地址IPBl的SDP “c线”。 SIP invite (SIP INVITE) containing SDP "c line" having the IP address IPBl. 由于其不理解SDP “mgwid”属性,所以节点B在不进行修改的情况下转送其属性。 Because it is not understood that SDP "mgwid" attribute, node B in the case where the transfer of its properties without modification. 在接收到SIP邀请(SIP INVITE)消息时,MSC C将SDP “mgwid”属性中的IP地址与相应SDP “c线”中的IP地址相比较。 Upon receiving the SIP INVITE (the INVITE SIP) message, MSC C the SDP "mgwid" IP Address The IP address of the corresponding attribute in SDP "c line" in comparison. 由于两个IP地址不相等,所以MSC C不将SDP “mgwid”属性中的MGWID B用于媒体网关的(预先)选择。 Because the two IP addresses are not equal, the MSC C does not SDP "mgwid" attribute for the media gateway MGWID B (pre) selection. 相反,其选择媒体网关MGW Co所述(预先)选择可以例如确定相对于MSC C路由要建立的呼叫的下一跳的最优化位置上的媒体网关。 Instead, the selection of the media gateway MGW Co (pre) selection may be determined, for example, the media gateway with respect to the optimized position next hop MSC C routes the call to be established. MSC C指示MGW C为朝向IP地址IPBl发送媒体的终结点预留资源并为另一终结点预留资源(步骤4),并且MGW C确认资源的预留并指示其向终结点分配了IP地址IPCl和IPC2 (步骤5)。 MSC C indicates MGW C to reserve resources for transmission termination IP address of the media toward IPBl resources are reserved (step 4) to another endpoint, and MGW C confirms the reservation of the resources and indicates that it allocated IP address to the endpoint IPCl and the IPC2 (step 5). 在步骤6至8中,MSC C可以转送包含具有IP地址IPCl的SDP “c线”的SIP邀请(SIP INVITE)消息,MSC C可以接收SIP响应消息,例如“183会话过程消息”,其包含具有“c线”中的IP地址IPD的SDP应答,并且MSC C将MGW C配置为朝着IB)发送媒体。 In Step 6 to 8, MSC C can forward SIP Invite (SIP the INVITE) message containing SDP "c line" having the IP address IPCl's, MSC C may receive a SIP response message, e.g., "183 session message", which comprises a IPD IP address of "c line" of the SDP answer, and MSC C is configured towards the MGW C IB) transmission media. 应注意的是可以用其它信令例如ISUP(ISDN用户部分)信令或朝向移动终端的信令来代替步骤6至8。 It is noted that other signaling may be for example ISUP (ISDN user part) signaling or instead of step 6-8 signaling towards the mobile terminal.

[0101 ] 在步骤9中,MSC C转送在步骤7中接收到的SIP响应消息。 [0101] In step 9, MSC C transfers received in step 7 SIP response message. SIP响应消息包含封装的SDP,该封装的SDP包含指示由MGW C根据正常SIP/SDP规则分配的IP地址IPC2的“c线”。 SDP of the SIP response message contains the package, the package contains SDP indicating assigned by MGW C according to normal SIP / SDP rules IPC2 IP address of "c line." MSC C还使用新SDP属性“mgwid”来指示MGW C的身份。 MSC C also use the new SDP attribute "mgwid" to indicate the status of MGW C. 根据本实施例,此SDP属性的值包含与在“c线”中相同的IP地址IPC2作为验证数据,另外包含媒体网关MGW C的唯一标识MGWID Co在步骤10中,节点B将MGW B配置为朝向IPC2发送媒体,并且在步骤11中,节点B朝向MSC A转送SIP响应消息。 According to the present embodiment, the value of this SDP attribute contains the same in the "c line" IP Address IPC2 as the verification data, further comprising a media gateway MGW C uniquely identifies MGWID Co in step 10, the Node B the MGW B configure toward IPC2 transmission media, and in step 11, the node B towards the MSC A SIP response message is forwarded. SIP响应消息包含具有IP地址IPB2的SDP c线。 SIP response message containing SDP c-line with the IP address IPB2. 由于其不理解SDP “mgwid”属性,所以节点B在不进行修改的情况下转送其属性。 Because it is not understood that SDP "mgwid" attribute, node B in the case where the transfer of its properties without modification. 在接收到SIP响应时,MSC A将SDP “mgwid”属性中的IP地址与相应SDP c线中的IP地址相比较。 Upon receiving the SIP response, MSC A to the IP address of the SDP "mgwid" attribute with the IP address in the corresponding SDP c-line comparison. 由于两个IP地址不相等,所以MSC A不将SDP “mgwid”属性中的MGWID C用于媒体网关的选择。 Because the two IP addresses are not equal, the MSC A does not SDP "mgwid" attribute MGWID C for selecting the media gateway. 相反,其选择MGW Ao该选择可以例如确定相对于MSC A从其接收呼叫的前一跳的最优化位置上的MGW。 In contrast, MGW Ao which selects the selection may be determined, for example from MSC A MGW with respect to optimizing the position of the previous hop on receiving a call. MSC A指示MGW A为朝向IP地址IPB2发送媒体的终结点预留资源(步骤12)。 MSC A indicates MGW A to reserve resources (step 12) toward the endpoint IP address IPB2 transmission media.

[0102] 因此,根据图9的操作,MSC A被配置为在接收侧处执行图4和5的方法中的任何一个以及在发送侧处执行图2和3的方法中的任何一个,节点B未被配置为执行本文所述的方法中的任何一个,并且MSC C被配置为在发送侧处执行图2和3的方法中的任何一个以及在接收侧处执行图4和5的方法中的任何一个。 [0102] Thus, according to the operation of FIG. 9, MSC A is configured to perform any one and any of a method of performing FIG side of the transmission 2 and 3, the Node B in the process of receiving the implementation of FIG side 4 and 5 of the is not configured to perform any of the methods described herein, and MSC C is configured as any of a method and a receiving side performed at 4 and 5 is performed at the transmission side in the process of FIGS. 2 and 3, in anyone.

[0103] 虽然“SIP邀请(SIP INVITE)”和“SIP 183会话过程”在上文已被用作其中可以传输相关信息的消息的非限制性示例,但应注意的是可以另外或替换地使用任何种类的消息。 [0103] Although "the SIP Invite (SIP INVITE)" and "SIP 183 session" has been used as a non-limiting example wherein the information message can be transmitted in the above, it should be noted that additionally or alternatively be used any kind of news. 例如,可以应用任何种类的“SDP提供”或“SDP应答”消息。 For example, you can apply any kind of "SDP offer" or "SDP answer" message.

[0104] 虽然到目前为止已主要参照方法、程序和功能描述了本发明的实施例,但本发明的相应实施例也涵盖各设备、网络节点,包括其软件和硬件两者。 [0104] While the embodiments so far described embodiments of the present invention mainly with reference to methods, procedures and functions, the respective embodiments of the present invention also encompasses the devices, network nodes, including both software and hardware.

[0105] 在下面的图10和11中描绘的设备可以被实现为独立装置或装置、网络设备、节点等的组成部分。 [0105] may be implemented as part of a standalone device or a device, a network device, such as node 11 in the following and depicted in the device 10 of FIG. 所示的两个设备还可以例如通过可操作地与或不与中间节点或设备耦合组成公共系统。 Two devices may also be shown by, for example, operatively associated with or without intermediate devices or nodes coupled to a common system. 举例说明的方框中的任何一个表示某些功能且可以以任何可想象的方式在硬件或软件中或以组合方式实现。 Any of a block illustrated in FIG certain functions and may be implemented in combination, or in any manner conceivable in the hardware or software. 也就是说,当在下文中使用术语“用于…的装置”时,意图涵盖能够实现此类功能的任何物理实现。 That is, when the "means for ..." term used hereinafter, is intended to encompass any physical realization of these functions can be implemented. 这些可以例如是任何种类的处理器、数据处理单元、数据发生器等。 These may be any kind of processor, for example, a data processing unit, a data generator. 在这种意义上,术语“用于…的装置”意图具有与术语“被配置为…的装置”具有相同的意义和范围,其中,装置可以是任何种类的物理实现。 In this sense, the term "means for ..." is intended to have the term "device is configured to ..." has the same meaning and range, wherein the device may be any kind of physical implementation.

[0106] 在下面的图10和11中,单独方框之间的箭头表示其之间的操作性耦合以及这些耦合上的数据流的方向,并且斜体字的命名表示在某些耦合上传输的数据。 [0106] In the following FIGS. 10 and 11, an arrow represents the direction between the individual block operatively coupled between the data on which the coupled and these streams, and italics denotes the coupling transmission on certain data.

[0107] 图10示出根据本发明的示例性实施例的设备的示意性方框图。 [0107] FIG. 10 shows a schematic block diagram of apparatus according to an exemplary embodiment of the present invention. 这样举例说明的设备被配置为以单独或组合方式执行图2和3的方法中的任何一个。 Such apparatus is configured to illustrate either alone or in combination to FIGS. 2 and 3 perform the method. 也就是说,图10还包括两个细节层次(根据图2的一个用虚线描绘,并且根据图3的一个用实线描绘),必须将其视为本发明的两个不同实施例。 That is, FIG 10 also comprises two levels of detail (depicted by broken lines in FIG. 2, according to one and a drawing by a solid line in accordance with FIG. 3), which must be considered as two different embodiments of the present invention.

[0108] 根据图10,根据本实施例的设备包括用于供应被预选的媒体网关的身份的装置1010和用于提供用于所述预选媒体网关身份的验证信息的装置1020,其中,所述验证信息被配置为能够检验所述预先网络实体身份是否可适用于第二网络设备处的网络实体选择。 [0108] According to FIG. 10, the apparatus according to the present embodiment comprises means for supplying the identity of the pre-selected media gateway means 1010 and means 1020 for providing verification information for said preselected media gateway identity, wherein said authentication information is configured to be able to verify in advance the network entity identity is applicable for network entity selection at a second network device. 通过存储媒体网关(预先)选择程序的相关结果的存储器装置1030来为装置1010和1020两者提供必要的信息。 (Previously) selected by the correlation results stored in a program memory media gateway device 1030 to provide the necessary information for both device 1010 and 1020. 也就是说,当(预先)选择了媒体网关时,其身份及诸如网络地址等其它数据被存放在存储器装置1030中以供将来使用。 That is, when the (previously) selected media gateway identity and its other data such as a network address is stored in the memory device 1030 for future use. 存储器装置1030在操作上与装置1010和1020 二者耦合且可以是永久性和临时性的任何种类。 And coupling the memory device 1030 may be any kind of permanent and temporary means with both the 1010 and 1020 on the operation.

[0109] 根据本实施例的供应装置1010由用于优选地在SDP属性中在某些参数中对预选MGff身份进行编码以便传输的装置1011构成。 [0109] Preferably in the SDP attribute identity preselected MGff supply device 1010 according to the present embodiment is used for certain parameters encoded for transmission apparatus 1011 constituted.

[0110] 根据本实施例的提供装置1020由用于向例如SDP属性的经这样编码的传输参数添加诸如预选媒体网关的IP地址的网络地址的装置1021构成。 [0110] Add embodiment provides apparatus 1020 according to the embodiment for example, the transmission parameters encoded in this way by means of the SDP attribute 1021, such as a network address of the preselected media gateway IP address configuration.

[0111] 根据本实施例的设备还包括用于在会话发起协议(SIP或SIP-Ι)消息中将预选媒体网关身份和验证数据发送到另一设备的装置1040 (例如发送器)。 [0111] The apparatus of the present embodiment further comprises means for initiation protocol (SIP or SIP-Ι) message transmitted in the preselected media gateway identity and authentication data to device 1040 to another device (e.g., a transmitter) in the session.

[0112] 根据本发明的一方面,所述设备还包括用于将诸如预选媒体网关的IP地址的网络地址定义为连接数据、优选地作为SDPc线”的装置1050。如果是这样,则发送装置1040还被配置为在会话发起协议(SIP或SIP-Ι)消息中发送此连接数据。 [0112] According to an aspect of the present invention, the apparatus further comprises a network address such as an IP address of the preselected media gateway is defined as a connection data, preferably as SDPc line "means 1050. If so, the transmitting means 1040 is further configured to initiate protocol (SIP or SIP-Ι) in the session message sent to this connection data.

[0113] 图11示出根据本发明的示例性实施例的设备的示意性方框图。 [0113] FIG. 11 shows a schematic block diagram of an exemplary embodiment of the apparatus of the present invention. 这样举例说明的设备被配置为以单独或组合方式执行图4和5的方法中的任何一个。 Such apparatus is illustrated in a configured singly or in any combination and the implementation of FIG. 5. 也就是说,图11还包括两个细节层次(根据图4的一个用虚线描绘,并且根据图5的一个用实线描绘),必须将其视为本发明的两个不同实施例。 That is, FIG. 11 further comprises two levels of detail (depicted by a broken line in FIG. 4, according to one, and according to a drawing by a solid line in FIG. 5), which must be considered as two different embodiments of the present invention.

[0114] 根据图11,根据本实施例的设备包括用于获得预选媒体网关的身份和用于所述预选媒体网关身份的验证信息的装置1110,和用于基于该验证信息来检验所获得的预选网络实体身份是否可适用于本设备处的网络实体选择的装置1130。 [0114] According to FIG 11, an embodiment of the apparatus according to the present embodiment includes means for obtaining the preselected media gateway identity and the verification information 1110 for the preselected media gateway identity, and based on the authentication information to verify the obtained the preselected network entity identity is applicable for network entity selection means 1130 to present at the device.

[0115] 根据本实施例的一个方面,所述设备还包括用于在会话发起协议(SIP或SIP-1)消息中从另一设备接收预选媒体网关身份和验证数据的装置(例如接收机)1140。 [0115] In accordance with one aspect of this embodiment, the apparatus further comprises a session initiation protocol (SIP or SIP-1) means for receiving a message from a pre-selected media gateway identity and authentication data to another device (e.g. receiver) 1140. 此类消息可以例如包括SDP属性中的预选媒体网关身份和诸如预选媒体网关的IP地址的网络地址、以及作为SDP连接数据、优选地作为SDP “c线”的诸如预选媒体网关的IP地址的网络地址。 Such a network message may comprise, for example, a network address of the preselected media gateway identity SDP attributes and the preselected media gateway such as an IP address, and the IP address as SDP connection data, preferably as SDP "C line" as the preselected media gateway address.

[0116] 根据图11,获得装置1110包括用于从SDP属性获得预选媒体网关的网络地址的装置1111,即装置1111从SDP属性获得IP地址作为验证数据。 [0116] According to FIG. 11, the obtaining means 1110 comprises means 1111 for obtaining the preselected media gateway network address from the SDP attribute, i.e., means 1111 obtains an IP address from the SDP attribute as the verification data. 此外,根据一个实施例的检验装置1130由用于将由装置1110获得的SDP属性中的网络地址与由用于检索此信息的检索装置1120从SDP “c线”检索的SDP连接数据(例如c线)中的网络地址相互比较的装置1131构成。 Further, by the means 1110 for obtaining the SDP attribute of SDP to retrieve the network address and connection data (c-line e.g. retrieving means 1120 retrieves this information from the SDP "c-line" by the test device 1130 according to one embodiment ) network address means for comparing each configuration 1131. 此外,所述设备可以包括用于在比较装置1131显示网络地址相等(或者,换言之,检验装置1130显示预选网络实体身份可适用于网络实体选择)的情况下将预选媒体网关身份用于媒体网关选择的装置1150,和用于在比较装置1131显示网络地址是不相等(或者,换言之,检验装置1130显示预选网络实体身份不可适用于网络实体选择)的情况下丢弃预选媒体网关身份的装置1160。 Further, the apparatus may comprise means for comparing the network address is equal to the display 1131 (or, in other words, the inspection device 1130 displays preselected network entity identity is applicable for network entity selection) for the case of selecting the media gateway preselected media gateway identity apparatus 1150, and the device discards the preselected media gateway identity case 1160 that the network addresses are not equal (not preselected network entity identity for network entity selection or, in other words, the inspection device 1130 shown) means 1131 for comparing.

[0117] 作为替换,根据本发明的实施例的设备还包括无论由比较装置1170产生的结果如何都从SIP/SIP-1消息去除SDP属性的装置1170。 [0117] Alternatively, regardless of the result generated by the comparison means 1170 means 1170 remove both how the SDP attribute from the SIP / SIP-1 message according to an embodiment of the apparatus of the present invention further comprises a.

[0118] 图12示出根据本发明的示例性实施例的数据结构的示意性表示。 [0118] FIG. 12 shows a schematic representation of a data structure of an exemplary embodiment of the present invention.

[0119] 如图12示例性地描绘的,根据本发明的实施例的特定数据结构可由SDP属性或扩展表示,其包含媒体网关的身份(MGW ID)的数据表示和媒体网关的网络地址(ADDR)的表示,例如用于通过媒体网关的用户平面业务的IP地址。 [0119] FIG. 12 depicts an example of a data structure in accordance with certain embodiments of the present invention may be extended representation or SDP attribute, which contains the identity of the media gateway (MGW ID) and the data representing the network address of the media gateway (ADDR ) represents, for example, an IP address for user plane traffic through the media gateway. 请注意,用于“网络地址”的等效术语可以是“连接地址”。 Note that, for the "Network Address" can be equivalent to the term "connection address."

[0120] 因此,根据本发明的实施例,可以用以下语法(在ABNF定义中)将媒体网管身份MGff ID(S卩,MGW标识符)示例性地编码为以下“会话级”或“媒体级”SDP属性(例如,称为“mgwid”):MGff_Identifier =" a = MGff_Identifier:<connect1n-address><MGff_Id>" [0120] Thus, according to embodiments of the present invention, the following syntax may be used (in the definition of ABNF) media network identity MGff ID (S Jie, the MGW identifier) ​​encoded as exemplarily less "session level" or "media level "SDP attribute (e.g., referred to as" mgwid "): MGff_Identifier =" a = MGff_Identifier: <connect1n-address> <MGff_Id> "

[0121] 子字段〈connect1n-address〉、即网络地址可以具有与针对RFC 4566的第5.7款中的SDP c线的〈connect1n-address〉子字段所定义的相同的编码。 [0121] subfield <connect1n-address>, i.e., the network address may have the same encoding <connect1n-address> For the first subfield 5.7 in RFC 4566 SDP c-line as defined. 子字段<MGW_Id>、即媒体网关的身份可以是包含除OxOO(Nul) ,OxOA(LF)、和OxOD(CR)之外的任何八位位组(octet)值的八位位组串。 Subfield <MGW_Id>, i.e. the identity of the media gateway may comprise any octets (OCTET) octet string values ​​except OxOO (Nul), OxOA (LF), and OxOD (CR) of. 将如在标准字符集中一样解释所述值。 The value will be the same as explained in the standard character set. 应注意的是,可以例如以与在BICC中的BCU-1D相同的方式对子字段<MGW_Id>进行编码,即用于表示网络ID字段和本地B⑶-1D字段的4个八位位组。 It is noted that, for example, may be in the BCU-1D BICC in the same manner as the sub-field <MGW_Id> encoding, i.e. for indicating four octets local network ID field and the field B⑶-1D. 子字段<MGWId>应包含用于媒体网关的运营商定义的唯一标识符。 Subfield <MGWId> shall contain a unique identifier for an operator-defined media gateway. SDPMGW_Identifier属性的属性值不应服从SDP “charset”属性。 Property values ​​SDPMGW_Identifier property should not be subject to SDP "charset" attribute.

[0122] 如上所述,如果MGW_Identifier属性中的〈connect1n-address〉子字段和相应SDP c线的〈connect1n-address〉子字段不匹配,则不支持该属性的中间节点已在用户平面中插入某物,但透明地传递该属性。 [0122] As described above, if the <connect1n-address> and the corresponding SDP c subfield line MGW_Identifier attribute <connect1n-address> sub-fields do not match, this property is not supported by an intermediate node has been inserted in the user plane was passed transparently but this property.

[0123] 图13示出根据本发明的示例性实施例的数据结构的示意性表示。 [0123] FIG. 13 shows a schematic representation of a data structure of an exemplary embodiment of the present invention.

[0124] 如图13示例性地描绘的,根据本发明的实施例的特定数据结构可以由SIP或SIP-1消息格式表示,该SIP或SIP-1消息格式包含SDP属性部分中的媒体网关的身份(MGWID)和媒体网关的网络地址(ADDR),例如用于通过媒体网关的用户平面业务的IP地址,以及例如SDP “c线”中的作为SDP连接数据的媒体网关的网络地址(ADDR),例如用于通过媒体网关的用户平面业务的IP地址。 [0124] FIG. 13 depicts an example of a data structure in accordance with certain embodiments of the present invention may be represented by the SIP message or SIP-1 format, the SIP or SIP-1 format message comprises SDP attribute section media gateway identity network address (MGWID) and a media gateway (ADDR), such as IP address for the media gateway through the user plane traffic, e.g. SDP, and "line C" in the SDP connection data as the media gateway network address (ADDR) , for example, for user plane traffic through the IP address of the media gateway. 应注意的是SDP属性和SDP连接数据中的网络地址可以是相等或不同的,并且还可以由不同的实体插入,如上文通过图6至9可以看到的。 It should be noted that the SDP attributes and SDP connection data network address may be equal or different, and may also be inserted by different entities, as described by FIGS. 6-9 can be seen.

[0125] 应注意的是图12和13的数据表示仅仅是说明性的,并且也可以沿水平取向或以任何其它顺序进行举例说明。 [0125] It should be noted that the data represented in Figures 12 and 13 are merely illustrative, and may also be illustrated in horizontal orientation or in any other order. 并且,SDP属性/扩展和SIP/SIP-1消息可以在所描绘的那些元件前面、在其之间、和/或在其之后包含其它元件。 And, the SDP attribute / extension and SIP / SIP-1 message may be depicted in front of those elements, in between and / or include other elements after it.

[0126] 当然可以通过软件和/或硬件来实现上述任何功能、方法和操作。 [0126] Of course, any of the functions may be implemented in the above-described methods and operated by software and / or hardware.

[0127] 通常,应注意的是如果仅仅适合于执行各部分的所述功能,则可以分别在硬件和/或软件中通过任何已知手段来实现根据上述方面的各功能元件。 [0127] Generally, it should be noted that if only adapted to perform the function of each part, respectively, may be implemented in hardware and / or software implemented by any known means according to each of the functional elements of the above aspects. 可以在单独功能块中或由单独装置来实现所述方法步骤,或者可以在单个功能块中或由单个装置来实现方法步骤中的一个或多个。 Or a separate device may be implemented by a step of the method, or may be implemented by a single device or in a single functional block or a plurality of method steps in a single function block.

[0128] 此外,可能被实现为软件代码部分并在实体之一处使用处理器运行的方法步骤和功能是软件代码无关的,并且可以使用诸如例如Java、C++、C、和汇编程序的任何已知或未来开发的编程语言来规定。 [0128] Furthermore, it may be implemented as software code portions and using the method steps and functions of the processor operating in one of the entities are software code independent and can be used as is for example any Java, C ++, C, and Assembler of known or future developed programming language rules. 可能在实体之一处被实现为硬件组件的方法步骤和/或设备或装置是硬件无关的,并且例如,可以使用任何已知或未来开发的硬件技术或它们的任何混合来实现,诸如MOS、CMOS、BiCMOS、ECL, TTL等,其使用例如ASIC组件或DSP组件。 May be implemented as hardware components at one of the entities of method steps and / or apparatus or device is hardware independent, for example, any known or future developed hardware technology or any hybrids thereof be implemented, such as the MOS, CMOS, BiCMOS, ECL, TTL, etc., using for example ASIC components or DSP components. 通常,在不改变本发明的构思的情况下,任何方法步骤适合于被实现为软件或由硬件来实现。 Typically, without altering the concepts of the present invention, any method step is suitable to be implemented as software or by hardware. 设备和装置可以被实现为单独的设备,但这不排除遍及整个系统以分布式方式来实现它们,只要保留设备的功能即可。 Devices and means can be implemented as individual devices, but this does not exclude a distributed fashion throughout the system, they are implemented, as long as the functionality of the device can be retained. 应认为此类和类似原理为本领域的技术人员所知。 It shall be deemed such and similar principles known to those of skill in the art.

[0129] 在本说明的意义上的软件包括软件代码,该软件代码同样地包括用于执行各功能的代码装置,以及在诸如具有在其上面存储的各数据结构或代码部分的计算机可读存储介质的有形介质上体现或可能在其处理期间在信号中或在芯片中体现的软件(或计算机程序或计算机程序产品)。 [0129] Software in the sense of the present description comprises software code, the software code in the same manner comprising code means for performing the respective functions, as well as having each of the data structures or portions of computer code stored thereon readable storage software embodied on a tangible medium or media may be embodied in a chip or during its processing in the signal (or a computer program or a computer program product).

[0130] 一般而言,出于上文所述的本发明的目的,应注意的是 [0130] In general, for the purposes of the present invention described above, it should be noted that

[0131]-接入技术可以是用户设备通过其能够接入一个接入网络(例如经由基站或一般为接入节点)的任何技术。 [0131] - an access technology may be a user to access a device through which access network (e.g., via a base station or generally an access node) any technique. 可以使用任何目前或未来的技术,诸如WLAN(无线本地接入网)、WiMAX(微波存取全球互通)、蓝牙、红外等;虽然以上技术大部分是无线接入技术,例如在不同的射频频谱中,在本发明的意义上的接入技术还可以意指有线(wirebound)技术,例如类似于电缆网络或固定线路的基于IP的接入技术,以及电路交换接入技术;接入技术可以是可在诸如分组交换和电路交换的至少两个类别或接入域中区别的,但是多于两个的接入域的存在不妨碍对其应用的本发明, You may use any current or future technology, such as WLAN (Wireless Local Access Network), the WiMAX (Worldwide Interoperability for Microwave Access), Bluetooth, infrared, etc.; Although most of the above techniques is a radio access technology, for example, in different radio frequency spectrum , the access technology in the sense of the present invention may also mean a wired (wirebound) techniques, such as a cable network or a similar IP-based fixed line access technologies, and a circuit switched access technologies; access technology may be at least two categories can be distinguished, such as packet switched and circuit switched access domain, or, but more than two access domains does not interfere with the present invention applied thereto,

[0132]-接入网络可以是通过其站、实体或其它用户设备可以连接到和/或利用由接入网络提供的服务的任何装置、设备、单元或手段;此类服务特别地包括数据和/或(听)视觉通信、数据下载等; [0132] - an access network may be through its station, entity or other user equipment may connect to and / or any device, apparatus, unit or means using a service provided by the access network; such services include data and in particular / or (listening) visual communication, data download, etc.;

[0133]-用户设备可以是通过其系统用户可以体验来自接入网络的服务的任何装置、设备、单元或手段,诸如移动电话、个人数字助理PDA、或计算机; [0133] - any device, apparatus, unit or means may be a device user may experience services from an access network system through which a user, such as a mobile phone, a personal digital assistant PDA, or computer;

[0134]-很可能被实现为软件代码部分且使用网络元件或终端处的处理器(作为其装置、设备和/或模块的示例,或者作为包括用于其的设备和/或模块的实体的示例)来运行的方法步骤是软件代码无关的,且可以使用任何已知或未来开发的编程语言来规定,只要保留该方法步骤所定义的功能即可; [0134] - is likely to be implemented as software code portions and using a processor at a network element or terminal (as examples of its apparatus, devices and / or modules thereof, or as a device comprising a and / or modules entity method step example) to run the software code independent and can be implemented using any known or future developed programming language provides the method steps as long as the retention function can be defined;

[0135]-通常,在不改变所实现的功能方面的本发明的思想的情况下,任何方法步骤适合于被实现为软件或由硬件来实现; [0135] - generally, the case where the idea of ​​the present invention in terms of the functions implemented without changing any method step is suitable to be implemented as software or by hardware;

[0136]-可能在终端或网络元件处被实现为硬件组件的方法步骤和/或装置、设备、单元或手段、或其任何模块是硬件无关的,并且可以使用任何已知或未来开发的硬件技术或其任何混合来实现,诸如MOS (金属氧化物半导体)、CMOS (互补MOS)、BiMOS (双极M0S)、BiCMOS (双极CMOS)、ECL (发射极耦合逻辑)、TTL (晶体管-晶体管逻辑)等,其使用例如ASIC(专用IC(集成电路))组件、FPGA(现场可编程门阵列)组件、CPLD(复杂可编程逻辑器件)组件或DSP (数字信号处理器)组件;另外,可能被实现为软件组件的任何方法步骤和/或装置、单元或手段可以例如基于能够进行认证、授权、加密(keying)和/或业务保护的任何安全架构; [0136] - it may be implemented in a terminal or network element as hardware components of method steps and / or devices, apparatuses, units or means, or any module is a hardware-independent, and may utilize any known or future developed hardware technology or any hybrids of these, such as MOS (metal oxide semiconductor), the CMOS (complementary MOS), BiMOS (bipolar M0S), BiCMOS (bipolar CMOS), eCL (emitter coupled logic), the TTL (transistor - transistor logic), etc., using for example ASIC (Application specific IC (Integrated Circuit)) components, the FPGA (field programmable gate arrays) components, CPLD, (complex programmable logic device) components or DSP (digital signal processor) components; Additionally, it may be implemented as a software component of any method steps and / or devices, units or means, for example, may be based on any security architecture capable of authentication, authorization, encryption (Keying) and / or traffic protection;

[0137]-装置、设备、单元或手段可以被实现为单独的装置、设备、单元或手段,但这不排除以遍布于系统的分布式方式来实现它们,只要保留装置、设备、单元或手段的功能即可; [0137] - apparatus, device, unit or means may be implemented as individual devices, devices, units or means, but this does not exclude a distributed fashion throughout the system to achieve them, as long as the retention apparatus, device, unit or means the function can be;

[0138]-设备可以由半导体芯片、芯片组、或包括此类芯片或芯片组的(硬件)模块来表示;然而,这不排除将设备或模块的功能实现为诸如计算机程序或计算机程序产品的(软件)模块中的软件而不是作为实现的硬件的可能,所述计算机程序或计算机程序产品包括用于在处理器上执行/运行的可执行软件代码部分; [0138] - the device can be a chipset, or comprising such chip or chipset (hardware) module represented by the semiconductor chip; however, this does not exclude implement the functions of the device or module such as a computer program or computer program product (software) software modules rather than as a hardware implementation may be the computer program or computer program product comprising executable software code portions for performing / running on a processor;

[0139]-例如,可以将装置视为设备或多于一个设备的组件,无论其在功能上相互配合还是在功能上相互独立但处于同一个装置外壳中。 [0139] - For example, the device may be regarded as more than one device or device component, regardless of which cooperate in the functional or functionally independently of each other but in a same device housing.

[0140] 本发明还涵盖上述方法步骤和操作的任何可想象组合、以及上述节点、设备、模块或元件的任何可想象组合,只要可适用方法和结构布置的上述构思即可。 [0140] The present invention also encompasses the method described above, and any conceivable combination of steps of operation, and any conceivable combination of the above node, device, module, or element, as long as the above concept is applicable method and structural arrangement.

[0141] 即使上文根据附图参照示例描述了本发明,但应理解的是本发明不限于此。 [0141] Even if the present invention described above with reference to an example according to the accompanying drawings, it is to be understood that the invention is not limited thereto. 相反,对于本领域的技术人员来说显而易见的是在不脱离本文公开的发明构思的范围的情况下,可以以许多方式来修改本发明。 Instead, those skilled in the art it is obvious that without departing from the inventive concepts disclosed herein, the scope may be modified in many ways the present invention.

Claims (38)

  1. 1.一种网络设备选择方法,包括: 供应由第一网络设备预选的第三网络设备的身份,以及提供用于所述预选第三网络设备身份的验证信息,使得能够检验所述预选第三网络设备身份是否可适用于第二网络设备处的网络设备选择, 其中所述验证信息包括所述预选第三网络设备的网络地址。 CLAIMS 1. A method for selecting a network device, comprising: the identity of the third network device supplied by a first preselected network device, and providing verification information for said preselected third network device identities, so that the test can be preselected third whether the network device identity is applicable for network device selection at a second network device, wherein the authentication information comprises a network address of the preselected third network device.
  2. 2.如权利要求1所述的方法,还包括: 在会话发起协议消息中将预选第三网络设备身份和验证数据发送到第二网络设备。 2. The method according to claim 1, further comprising: transmitting in the pre-selected protocol message initiating a third network device identity and authentication data to the second device in the network session.
  3. 3.如权利要求1所述的方法,其中,所述身份的供应包括: 在会话描述协议属性中对预选第三网络设备身份进行编码,以及其中,验证信息的提供包括: 将预选第三网络设备的网络地址添加到所述会话描述协议属性。 3. The method according to claim 1, wherein the identity provider comprising: a third encoding the preselected network device identity in a session description protocol attribute, and wherein the authentication information comprises: a third preselected network a network address of a device is added to the session description protocol attribute.
  4. 4.如权利要求3所述的方法,还包括: 将预选第三网络设备的网络地址定义为会话描述协议连接数据,以及在会话发起协议消息中将这样定义的网络地址作为会话描述协议连接数据发送。 4. The method according to claim 3, further comprising: a third network address of the preselected network devices are defined as session description protocol connection data, and a Session Initiation Protocol message in the thus defined network address as session description protocol connection data send.
  5. 5.如权利要求3所述的方法,其中,所述预选第三网络设备的网络地址包括用于经由所述网络设备的通信的因特网协议地址。 5. The method according to claim 3, wherein said third network address of the preselected network device comprises an Internet Protocol address for communication with the network via the device.
  6. 6.如权利要求1至5中的任一项所述的方法,其中,由移动服务交换中心设备来执行所述方法。 6. The method according to any one of claims 1 to 5, according to claim, wherein the mobile services switching center apparatus to perform the method.
  7. 7.如权利要求1至5中的任一项所述的方法,其中,在通信系统的电路交换核心网络中执行所述方法。 7. A method according to any one of claims 1 to 5, according to claim, wherein the method is performed in a circuit switched core network of the communication system.
  8. 8.如权利要求1至5中的任一项所述的方法,其中,所述网络设备是媒体网关。 8. The method according to any of claims 1 to 5 claim, wherein the network device is a media gateway.
  9. 9.一种网络设备选择方法,包括: 获得由第一设备预选的第二网络设备的身份和用于所述预选第二网络设备身份的验证信息,以及基于所述验证信息来检验所获得的第二网络设备身份是否可适用于网络设备选择, 其中所述验证信息包括所述预选第二网络设备的网络地址。 A method for selecting a network device, comprising: obtaining the identity verification information from the second device to the first network device and a preselected second preselected for the network device identity, based on the verification information to verify the obtained the second network device identity is applicable for network selection apparatus, wherein the authentication information comprises a network address of the preselected second network device.
  10. 10.如权利要求9所述的方法,还包括: 在会话发起协议消息中接收预选第二网络设备身份和验证数据。 10. The method according to claim 9, further comprising: receiving a Session Initiation Protocol message a second preselected network device identity and authentication data.
  11. 11.如权利要求10所述的方法,其中,所述会话发起协议消息包含会话描述协议属性中的预选第二网络设备的预选第二网络设备身份和网络地址、以及作为会话描述协议连接数据的预选第二网络设备的网络地址。 11. The method according to claim 10, wherein the session initiation protocol message containing a session description protocol attribute preselected preselected second network device a second network device identity and network address, as well as a session description protocol connection data a second network address of the preselected network device.
  12. 12.如权利要求11所述的方法,还包括: 从会话描述协议连接数据检索预选第二网络设备的网络地址,以及其中,所述验证信息的获得包括: 从所述会话描述协议属性获得所述预选第二网络设备的网络地址。 12. The method of claim 11, further comprising: a network address of the session description protocol connection data retrieved from the second preselected network device, and wherein obtaining the authentication information comprises: obtaining the session description protocol attribute from the said second network address of the preselected network device.
  13. 13.如权利要求12所述的方法,其中,所述检验包括将会话描述协议属性中的所获得的网络地址与会话描述协议连接数据的所检索的网络地址相互比较。 13. The method of claim 12, wherein said testing comprises a network address will be retrieved network address in the session description protocol attribute of the obtained connection data to the session description protocol with each other.
  14. 14.如权利要求13所述的方法,还包括: 如果所述比较显示所比较的网络地址是相等的,则将所获得的第二网络设备身份用于网络设备选择,以及如果该比较显示网络地址不相等,则丢弃所获得的第二网络设备身份。 14. The method according to claim 13, further comprising: if said comparison shows that the compared network addresses are equal, then the identity of the second network device obtained is used to select a network device, and if the comparison shows that the network addresses are not equal, then discards the second network device identity obtained.
  15. 15.如权利要求13所述的方法,还包括: 从所述会话发起协议消息中去除所述会话描述协议属性。 15. The method according to claim 13, further comprising: removing the session description protocol attribute from the session initiation protocol message.
  16. 16.如权利要求11所述的方法,其中,所述预选第二网络设备的网络地址包括用于经由所述网络设备的通信的因特网协议地址。 16. The method of claim 11, wherein said preselected address of the second network device comprises a network for Internet protocol address of the network device via a communication.
  17. 17.如权利要求9至16中的任一项所述的方法,其中,由移动服务交换中心设备来执行所述方法。 17. The method as claimed in any of claims 9 to 16, wherein, the method is performed by a mobile services switching center apparatus.
  18. 18.如权利要求9至16中的任一项所述的方法,其中,在通信系统的电路交换核心网络中执行所述方法。 18. The method as claimed in any of claims 9 to 16, wherein said method is performed in a circuit switched core network of the communication system.
  19. 19.如权利要求9至16中的任一项所述的方法,其中,所述网络设备是媒体网关。 19. The method of any one of claims 9-16 claim, wherein the network device is a media gateway.
  20. 20.一种网络设备选择设备,包括: 用于供应由第一网络设备预选的第三网络设备的身份的装置; 用于提供用于所述预选第三网络设备身份的验证信息、使得能够检验所述预选第三网络设备身份是否可适用于第二网络设备处的网络设备选择的装置, 其中所述验证信息包括所述预选第三网络设备的网络地址。 20. A network device selecting device, comprising: means for identification by the third network device a first preselected supply network device; means for providing verification information for said preselected third network device identities, so that the test can be the preselected network device identity whether a third network device selection at a second network device may be applied to, wherein the authentication information comprises a network address of the preselected third network device.
  21. 21.如权利要求20所述的设备,还包括: 用于在会话发起协议消息中将预选第三网络设备身份和验证数据发送到所述第二网络设备的装置。 21. The apparatus according to claim 20, further comprising: means for initiating a preselected protocol message in the third network device identity and authentication data in said second session is sent to the network device.
  22. 22.如权利要求20所述的设备,其中,所述用于供应由第一网络设备预选的第三网络设备的身份的装置包括: 用于在会话描述协议属性中对预选第三网络设备身份进行编码的装置,以及其中,所述用于提供用于所述预选第三网络设备身份的验证信息的装置包括: 用于将预选第三网络设备的网络地址添加到所述会话描述协议属性的装置。 22. The apparatus according to claim 20, wherein said means for supplying comprises the identity of a third network device a first preselected network device: for a third preselected network device identity in a session description protocol attribute encoding means, and wherein the means for providing verification information for said preselected identity of the third network device comprises: a third network address of the preselected network device is added to the session description protocol attribute device.
  23. 23.如权利要求22所述的设备,还包括: 用于将所述预选第三网络设备的网络地址定义为会话描述协议连接数据的装置,其中所述用于在会话发起协议消息中将预选第三网络设备身份和验证数据发送到所述第二网络设备的装置还被配置为在会话发起协议消息中将这样定义的网络地址作为会话描述协议连接数据发送。 23. The apparatus according to claim 22, further comprising: means defining the network address of the preselected network device is a third session description protocol connection data, wherein the session initiation protocol is used in the message in preselected means for transmitting a third network device identity and authentication data to the second network device is further configured as a session initiation protocol message in the thus defined network address as session description protocol connection data transmission.
  24. 24.如权利要求22所述的设备,其中,所述预选第三网络设备的网络地址包括用于经由所述网络设备的通信的因特网协议地址。 24. The apparatus according to claim 22, wherein said third network address of the preselected network device comprises an Internet Protocol address for communication with the network via the device.
  25. 25.如权利要求20至24中的任一项所述的设备,其中,所述设备包括移动服务交换中心设备。 25. The apparatus according to any one 20 to 24 claim, wherein the apparatus comprises a mobile services switching center apparatus.
  26. 26.如权利要求20至24中的任一项所述的设备,其中,所述设备位于通信系统的电路交换核心网络中。 26. The apparatus according to any one 20 to 24 claim, wherein the device of the communication system of the circuit switched core network.
  27. 27.如权利要求20至24中的任一项所述的设备,其中,所述网络设备是媒体网关。 27. The apparatus according to any one 20 to 24 claim, wherein the network device is a media gateway.
  28. 28.一种网络设备选择设备,包括: 用于获得由第一设备预选的第二网络设备的身份和用于所述预选第二网络设备身份的验证信息的装置,以及用于基于所述验证信息来检验所获得的第二网络设备身份是否可适用于网络设备选择的装置, 其中所述验证信息包括所述预选第二网络设备的网络地址。 28. A network device selecting device, comprising: means for obtaining authentication information by the identity of the second device to the first network device and a preselected second preselected for the network identity for a device, based on the verification and the second network device identity information to verify whether the obtained device is applicable to a selected network device, wherein the authentication information includes a second network address of the preselected network device.
  29. 29.如权利要求28所述的设备,还包括: 用于在会话发起协议消息中接收预选第二网络设备身份和验证数据的装置。 29. The apparatus according to claim 28, further comprising: means for receiving a protocol message in a second preselected network device identity and verification data in a session initiation.
  30. 30.如权利要求29所述的设备,其中,所述用于在会话发起协议消息中接收预选第二网络设备身份和验证数据的装置被配置为接收会话发起协议消息,该会话发起协议消息包含会话描述协议属性中的预选第二网络设备的预选第二网络设备身份和网络地址、以及作为会话描述协议连接数据的所述预选第二网络设备的网络地址。 30. The apparatus according to claim 29, wherein the session initiation protocol message for the receiving device of the second preselected network device identity and authentication data is configured to receive a session initiation protocol message, the message comprising a session initiation protocol session description protocol attribute preselected preselected second network device in a second network device identity and network address, and the network address as session description protocol connection data of said second preselected network device.
  31. 31.如权利要求30所述的设备,还包括: 用于从会话描述协议连接数据检索预选第二网络设备的网络地址的装置,以及其中,所述用于获得由第一设备预选的第二网络设备的身份和用于所述预选第二网络设备身份的验证信息的装置包括: 用于从会话描述协议属性获得所述预选第二网络设备的网络地址的装置。 31. The apparatus according to claim 30, further comprising: means for retrieving a network address of the preselected connection data from the second network device for session description protocol, and wherein the means for obtaining a first device by a second preselected the identity of the network devices and device authentication information for said preselected network second identity device comprising: means for network address of the preselected network device obtained from the second session description protocol attribute.
  32. 32.如权利要求31所述的设备,其中,所述用于基于所述验证信息来检验所获得的第二网络设备身份是否可适用于网络设备选择的装置包括: 用于将会话描述协议属性中的所获得的网络地址与会话描述协议连接数据的所检索的网络地址相互比较的装置。 32. The apparatus according to claim 31, wherein the means for the second network device based on the identity verification information to verify whether the obtained network device adapted to select comprises: a session description protocol attribute means connected to the network address of the retrieved data are compared with each network address of the session description protocol obtained.
  33. 33.如权利要求32所述的设备,还包括: 用于在所述比较装置显示所比较的网络地址相等的情况下将所获得的第二网络设备身份用于网络设备选择的装置,以及用于在所述比较装置显示所比较的网络地址不相等的情况下丢弃所获得的第二网络设备身份的装置。 33. The apparatus according to claim 32, further comprising: means for comparing a case where the display apparatus is equal to the compared network addresses the identity of a second network device means for selecting the obtained network devices, and with the second network device identity device obtained in Comparative discarded in a case where the device displays the compared network addresses are not equal.
  34. 34.如权利要求32所述的设备,还包括: 用于从所述会话发起协议消息中去除会话描述协议属性的装置。 34. The apparatus according to claim 32, further comprising: a Session Initiation Protocol message from said apparatus for removing the session description protocol attribute.
  35. 35.如权利要求30所述的设备,其中,所述预选第二网络设备的网络地址包括用于经由所述网络设备的通信的因特网协议地址。 35. The apparatus as claimed in claim 30, wherein said second network address of the preselected network device comprises an Internet Protocol address for communication with the network via the device.
  36. 36.如权利要求28至35中的任一项所述的设备,其中,所述设备包括移动服务交换中心设备。 Device according to any of 28 to 35 36. The claims, wherein the apparatus comprises a mobile services switching center apparatus.
  37. 37.如权利要求28至35中的任一项所述的设备,其中,所述设备位于通信系统的电路交换核心网络中。 The apparatus as claimed in any one of 28 to 35 as claimed in claim 37, wherein said device is located in the communication system of the circuit switched core network.
  38. 38.如权利要求28至35中的任一项所述的设备,其中,所述网络设备是媒体网关。 The apparatus as claimed in any one of 28 to 35 as claimed in claim 38, wherein said network device is a media gateway.
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